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/clientv3/cluster.go b/vendor/github.com/coreos/etcd/clientv3/cluster.go
new file mode 100644
index 0000000..785672b
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/clientv3/cluster.go
@@ -0,0 +1,114 @@
+// Copyright 2016 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 clientv3
+
+import (
+	"context"
+
+	pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
+	"github.com/coreos/etcd/pkg/types"
+
+	"google.golang.org/grpc"
+)
+
+type (
+	Member               pb.Member
+	MemberListResponse   pb.MemberListResponse
+	MemberAddResponse    pb.MemberAddResponse
+	MemberRemoveResponse pb.MemberRemoveResponse
+	MemberUpdateResponse pb.MemberUpdateResponse
+)
+
+type Cluster interface {
+	// MemberList lists the current cluster membership.
+	MemberList(ctx context.Context) (*MemberListResponse, error)
+
+	// MemberAdd adds a new member into the cluster.
+	MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error)
+
+	// MemberRemove removes an existing member from the cluster.
+	MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error)
+
+	// MemberUpdate updates the peer addresses of the member.
+	MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error)
+}
+
+type cluster struct {
+	remote   pb.ClusterClient
+	callOpts []grpc.CallOption
+}
+
+func NewCluster(c *Client) Cluster {
+	api := &cluster{remote: RetryClusterClient(c)}
+	if c != nil {
+		api.callOpts = c.callOpts
+	}
+	return api
+}
+
+func NewClusterFromClusterClient(remote pb.ClusterClient, c *Client) Cluster {
+	api := &cluster{remote: remote}
+	if c != nil {
+		api.callOpts = c.callOpts
+	}
+	return api
+}
+
+func (c *cluster) MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error) {
+	// fail-fast before panic in rafthttp
+	if _, err := types.NewURLs(peerAddrs); err != nil {
+		return nil, err
+	}
+
+	r := &pb.MemberAddRequest{PeerURLs: peerAddrs}
+	resp, err := c.remote.MemberAdd(ctx, r, c.callOpts...)
+	if err != nil {
+		return nil, toErr(ctx, err)
+	}
+	return (*MemberAddResponse)(resp), nil
+}
+
+func (c *cluster) MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error) {
+	r := &pb.MemberRemoveRequest{ID: id}
+	resp, err := c.remote.MemberRemove(ctx, r, c.callOpts...)
+	if err != nil {
+		return nil, toErr(ctx, err)
+	}
+	return (*MemberRemoveResponse)(resp), nil
+}
+
+func (c *cluster) MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error) {
+	// fail-fast before panic in rafthttp
+	if _, err := types.NewURLs(peerAddrs); err != nil {
+		return nil, err
+	}
+
+	// it is safe to retry on update.
+	r := &pb.MemberUpdateRequest{ID: id, PeerURLs: peerAddrs}
+	resp, err := c.remote.MemberUpdate(ctx, r, c.callOpts...)
+	if err == nil {
+		return (*MemberUpdateResponse)(resp), nil
+	}
+	return nil, toErr(ctx, err)
+}
+
+func (c *cluster) MemberList(ctx context.Context) (*MemberListResponse, error) {
+	// it is safe to retry on list.
+	resp, err := c.remote.MemberList(ctx, &pb.MemberListRequest{}, c.callOpts...)
+	if err == nil {
+		return (*MemberListResponse)(resp), nil
+	}
+	return nil, toErr(ctx, err)
+}