This update provides:
1)  workaround around the build failures. In
summary, it forces the download of some packages during the build
process.
2) update the set of packages that should go inside the vendor
directory
3) Update the dockerfile to use go 1.10

Change-Id: I2bfd090ce0f25b0c10aa214755ae2da7e5384d60
diff --git a/vendor/github.com/coreos/etcd/etcdserver/config.go b/vendor/github.com/coreos/etcd/etcdserver/config.go
new file mode 100644
index 0000000..295d952
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/etcdserver/config.go
@@ -0,0 +1,282 @@
+// Copyright 2015 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package etcdserver
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/coreos/etcd/pkg/netutil"
+	"github.com/coreos/etcd/pkg/transport"
+	"github.com/coreos/etcd/pkg/types"
+)
+
+// ServerConfig holds the configuration of etcd as taken from the command line or discovery.
+type ServerConfig struct {
+	Name           string
+	DiscoveryURL   string
+	DiscoveryProxy string
+	ClientURLs     types.URLs
+	PeerURLs       types.URLs
+	DataDir        string
+	// DedicatedWALDir config will make the etcd to write the WAL to the WALDir
+	// rather than the dataDir/member/wal.
+	DedicatedWALDir     string
+	SnapCount           uint64
+	MaxSnapFiles        uint
+	MaxWALFiles         uint
+	InitialPeerURLsMap  types.URLsMap
+	InitialClusterToken string
+	NewCluster          bool
+	ForceNewCluster     bool
+	PeerTLSInfo         transport.TLSInfo
+
+	TickMs        uint
+	ElectionTicks int
+
+	// InitialElectionTickAdvance is true, then local member fast-forwards
+	// election ticks to speed up "initial" leader election trigger. This
+	// benefits the case of larger election ticks. For instance, cross
+	// datacenter deployment may require longer election timeout of 10-second.
+	// If true, local node does not need wait up to 10-second. Instead,
+	// forwards its election ticks to 8-second, and have only 2-second left
+	// before leader election.
+	//
+	// Major assumptions are that:
+	//  - cluster has no active leader thus advancing ticks enables faster
+	//    leader election, or
+	//  - cluster already has an established leader, and rejoining follower
+	//    is likely to receive heartbeats from the leader after tick advance
+	//    and before election timeout.
+	//
+	// However, when network from leader to rejoining follower is congested,
+	// and the follower does not receive leader heartbeat within left election
+	// ticks, disruptive election has to happen thus affecting cluster
+	// availabilities.
+	//
+	// Disabling this would slow down initial bootstrap process for cross
+	// datacenter deployments. Make your own tradeoffs by configuring
+	// --initial-election-tick-advance at the cost of slow initial bootstrap.
+	//
+	// If single-node, it advances ticks regardless.
+	//
+	// See https://github.com/coreos/etcd/issues/9333 for more detail.
+	InitialElectionTickAdvance bool
+
+	BootstrapTimeout time.Duration
+
+	AutoCompactionRetention time.Duration
+	AutoCompactionMode      string
+	QuotaBackendBytes       int64
+	MaxTxnOps               uint
+
+	// MaxRequestBytes is the maximum request size to send over raft.
+	MaxRequestBytes uint
+
+	StrictReconfigCheck bool
+
+	// ClientCertAuthEnabled is true when cert has been signed by the client CA.
+	ClientCertAuthEnabled bool
+
+	AuthToken string
+
+	// InitialCorruptCheck is true to check data corruption on boot
+	// before serving any peer/client traffic.
+	InitialCorruptCheck bool
+	CorruptCheckTime    time.Duration
+
+	Debug bool
+}
+
+// VerifyBootstrap sanity-checks the initial config for bootstrap case
+// and returns an error for things that should never happen.
+func (c *ServerConfig) VerifyBootstrap() error {
+	if err := c.hasLocalMember(); err != nil {
+		return err
+	}
+	if err := c.advertiseMatchesCluster(); err != nil {
+		return err
+	}
+	if checkDuplicateURL(c.InitialPeerURLsMap) {
+		return fmt.Errorf("initial cluster %s has duplicate url", c.InitialPeerURLsMap)
+	}
+	if c.InitialPeerURLsMap.String() == "" && c.DiscoveryURL == "" {
+		return fmt.Errorf("initial cluster unset and no discovery URL found")
+	}
+	return nil
+}
+
+// VerifyJoinExisting sanity-checks the initial config for join existing cluster
+// case and returns an error for things that should never happen.
+func (c *ServerConfig) VerifyJoinExisting() error {
+	// The member has announced its peer urls to the cluster before starting; no need to
+	// set the configuration again.
+	if err := c.hasLocalMember(); err != nil {
+		return err
+	}
+	if checkDuplicateURL(c.InitialPeerURLsMap) {
+		return fmt.Errorf("initial cluster %s has duplicate url", c.InitialPeerURLsMap)
+	}
+	if c.DiscoveryURL != "" {
+		return fmt.Errorf("discovery URL should not be set when joining existing initial cluster")
+	}
+	return nil
+}
+
+// hasLocalMember checks that the cluster at least contains the local server.
+func (c *ServerConfig) hasLocalMember() error {
+	if urls := c.InitialPeerURLsMap[c.Name]; urls == nil {
+		return fmt.Errorf("couldn't find local name %q in the initial cluster configuration", c.Name)
+	}
+	return nil
+}
+
+// advertiseMatchesCluster confirms peer URLs match those in the cluster peer list.
+func (c *ServerConfig) advertiseMatchesCluster() error {
+	urls, apurls := c.InitialPeerURLsMap[c.Name], c.PeerURLs.StringSlice()
+	urls.Sort()
+	sort.Strings(apurls)
+	ctx, cancel := context.WithTimeout(context.TODO(), 30*time.Second)
+	defer cancel()
+	ok, err := netutil.URLStringsEqual(ctx, apurls, urls.StringSlice())
+	if ok {
+		return nil
+	}
+
+	initMap, apMap := make(map[string]struct{}), make(map[string]struct{})
+	for _, url := range c.PeerURLs {
+		apMap[url.String()] = struct{}{}
+	}
+	for _, url := range c.InitialPeerURLsMap[c.Name] {
+		initMap[url.String()] = struct{}{}
+	}
+
+	missing := []string{}
+	for url := range initMap {
+		if _, ok := apMap[url]; !ok {
+			missing = append(missing, url)
+		}
+	}
+	if len(missing) > 0 {
+		for i := range missing {
+			missing[i] = c.Name + "=" + missing[i]
+		}
+		mstr := strings.Join(missing, ",")
+		apStr := strings.Join(apurls, ",")
+		return fmt.Errorf("--initial-cluster has %s but missing from --initial-advertise-peer-urls=%s (%v)", mstr, apStr, err)
+	}
+
+	for url := range apMap {
+		if _, ok := initMap[url]; !ok {
+			missing = append(missing, url)
+		}
+	}
+	if len(missing) > 0 {
+		mstr := strings.Join(missing, ",")
+		umap := types.URLsMap(map[string]types.URLs{c.Name: c.PeerURLs})
+		return fmt.Errorf("--initial-advertise-peer-urls has %s but missing from --initial-cluster=%s", mstr, umap.String())
+	}
+
+	// resolved URLs from "--initial-advertise-peer-urls" and "--initial-cluster" did not match or failed
+	apStr := strings.Join(apurls, ",")
+	umap := types.URLsMap(map[string]types.URLs{c.Name: c.PeerURLs})
+	return fmt.Errorf("failed to resolve %s to match --initial-cluster=%s (%v)", apStr, umap.String(), err)
+}
+
+func (c *ServerConfig) MemberDir() string { return filepath.Join(c.DataDir, "member") }
+
+func (c *ServerConfig) WALDir() string {
+	if c.DedicatedWALDir != "" {
+		return c.DedicatedWALDir
+	}
+	return filepath.Join(c.MemberDir(), "wal")
+}
+
+func (c *ServerConfig) SnapDir() string { return filepath.Join(c.MemberDir(), "snap") }
+
+func (c *ServerConfig) ShouldDiscover() bool { return c.DiscoveryURL != "" }
+
+// ReqTimeout returns timeout for request to finish.
+func (c *ServerConfig) ReqTimeout() time.Duration {
+	// 5s for queue waiting, computation and disk IO delay
+	// + 2 * election timeout for possible leader election
+	return 5*time.Second + 2*time.Duration(c.ElectionTicks*int(c.TickMs))*time.Millisecond
+}
+
+func (c *ServerConfig) electionTimeout() time.Duration {
+	return time.Duration(c.ElectionTicks*int(c.TickMs)) * time.Millisecond
+}
+
+func (c *ServerConfig) peerDialTimeout() time.Duration {
+	// 1s for queue wait and election timeout
+	return time.Second + time.Duration(c.ElectionTicks*int(c.TickMs))*time.Millisecond
+}
+
+func (c *ServerConfig) PrintWithInitial() { c.print(true) }
+
+func (c *ServerConfig) Print() { c.print(false) }
+
+func (c *ServerConfig) print(initial bool) {
+	plog.Infof("name = %s", c.Name)
+	if c.ForceNewCluster {
+		plog.Infof("force new cluster")
+	}
+	plog.Infof("data dir = %s", c.DataDir)
+	plog.Infof("member dir = %s", c.MemberDir())
+	if c.DedicatedWALDir != "" {
+		plog.Infof("dedicated WAL dir = %s", c.DedicatedWALDir)
+	}
+	plog.Infof("heartbeat = %dms", c.TickMs)
+	plog.Infof("election = %dms", c.ElectionTicks*int(c.TickMs))
+	plog.Infof("snapshot count = %d", c.SnapCount)
+	if len(c.DiscoveryURL) != 0 {
+		plog.Infof("discovery URL= %s", c.DiscoveryURL)
+		if len(c.DiscoveryProxy) != 0 {
+			plog.Infof("discovery proxy = %s", c.DiscoveryProxy)
+		}
+	}
+	plog.Infof("advertise client URLs = %s", c.ClientURLs)
+	if initial {
+		plog.Infof("initial advertise peer URLs = %s", c.PeerURLs)
+		plog.Infof("initial cluster = %s", c.InitialPeerURLsMap)
+	}
+}
+
+func checkDuplicateURL(urlsmap types.URLsMap) bool {
+	um := make(map[string]bool)
+	for _, urls := range urlsmap {
+		for _, url := range urls {
+			u := url.String()
+			if um[u] {
+				return true
+			}
+			um[u] = true
+		}
+	}
+	return false
+}
+
+func (c *ServerConfig) bootstrapTimeout() time.Duration {
+	if c.BootstrapTimeout != 0 {
+		return c.BootstrapTimeout
+	}
+	return time.Second
+}
+
+func (c *ServerConfig) backendPath() string { return filepath.Join(c.SnapDir(), "db") }