VOL-1460 Updated core to use voltha-protos instead of local protos
Moved protos to python directory in order to maintain functionaly of containers built there.
Added capability to do local builds of protos
Added instructions on running dep ensure for getting protos.
Updated github.com/golang/protobuf version to v1.3.1

Change-Id: Ia6ef55f07f0d5dcb5b750d7c37b21b71db85bfc4
diff --git a/vendor/github.com/Shopify/sarama/acl_delete_response.go b/vendor/github.com/Shopify/sarama/acl_delete_response.go
index b5e1c45..a885fe5 100644
--- a/vendor/github.com/Shopify/sarama/acl_delete_response.go
+++ b/vendor/github.com/Shopify/sarama/acl_delete_response.go
@@ -3,6 +3,7 @@
 import "time"
 
 type DeleteAclsResponse struct {
+	Version         int16
 	ThrottleTime    time.Duration
 	FilterResponses []*FilterResponse
 }
@@ -15,7 +16,7 @@
 	}
 
 	for _, filterResponse := range a.FilterResponses {
-		if err := filterResponse.encode(pe); err != nil {
+		if err := filterResponse.encode(pe, a.Version); err != nil {
 			return err
 		}
 	}
@@ -51,7 +52,7 @@
 }
 
 func (d *DeleteAclsResponse) version() int16 {
-	return 0
+	return int16(d.Version)
 }
 
 func (d *DeleteAclsResponse) requiredVersion() KafkaVersion {
@@ -64,7 +65,7 @@
 	MatchingAcls []*MatchingAcl
 }
 
-func (f *FilterResponse) encode(pe packetEncoder) error {
+func (f *FilterResponse) encode(pe packetEncoder, version int16) error {
 	pe.putInt16(int16(f.Err))
 	if err := pe.putNullableString(f.ErrMsg); err != nil {
 		return err
@@ -74,7 +75,7 @@
 		return err
 	}
 	for _, matchingAcl := range f.MatchingAcls {
-		if err := matchingAcl.encode(pe); err != nil {
+		if err := matchingAcl.encode(pe, version); err != nil {
 			return err
 		}
 	}
@@ -115,13 +116,13 @@
 	Acl
 }
 
-func (m *MatchingAcl) encode(pe packetEncoder) error {
+func (m *MatchingAcl) encode(pe packetEncoder, version int16) error {
 	pe.putInt16(int16(m.Err))
 	if err := pe.putNullableString(m.ErrMsg); err != nil {
 		return err
 	}
 
-	if err := m.Resource.encode(pe); err != nil {
+	if err := m.Resource.encode(pe, version); err != nil {
 		return err
 	}