VOL-2265 test go.mod and vendor consistency;
Update dependencies to resolve `410 Gone` errors when fetching modules

Change-Id: If0bdbc1b6d629ce819b9fa4701c016df812f92d5
diff --git a/vendor/google.golang.org/genproto/protobuf/source_context/source_context.pb.go b/vendor/google.golang.org/genproto/protobuf/source_context/source_context.pb.go
index fe44f7e..c073ffb 100644
--- a/vendor/google.golang.org/genproto/protobuf/source_context/source_context.pb.go
+++ b/vendor/google.golang.org/genproto/protobuf/source_context/source_context.pb.go
@@ -1,14 +1,11 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // source: google/protobuf/source_context.proto
 
-package source_context
+package source_context // import "google.golang.org/genproto/protobuf/source_context"
 
-import (
-	fmt "fmt"
-	math "math"
-
-	proto "github.com/golang/protobuf/proto"
-)
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
@@ -19,7 +16,7 @@
 // is compatible with the proto package it is being compiled against.
 // A compilation error at this line likely means your copy of the
 // proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
 
 // `SourceContext` represents information about the source of a
 // protobuf element, like the file in which it is defined.
@@ -36,17 +33,16 @@
 func (m *SourceContext) String() string { return proto.CompactTextString(m) }
 func (*SourceContext) ProtoMessage()    {}
 func (*SourceContext) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b686cdb126d509db, []int{0}
+	return fileDescriptor_source_context_4ade4e806de19b22, []int{0}
 }
-
 func (m *SourceContext) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_SourceContext.Unmarshal(m, b)
 }
 func (m *SourceContext) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 	return xxx_messageInfo_SourceContext.Marshal(b, m, deterministic)
 }
-func (m *SourceContext) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_SourceContext.Merge(m, src)
+func (dst *SourceContext) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SourceContext.Merge(dst, src)
 }
 func (m *SourceContext) XXX_Size() int {
 	return xxx_messageInfo_SourceContext.Size(m)
@@ -69,10 +65,10 @@
 }
 
 func init() {
-	proto.RegisterFile("google/protobuf/source_context.proto", fileDescriptor_b686cdb126d509db)
+	proto.RegisterFile("google/protobuf/source_context.proto", fileDescriptor_source_context_4ade4e806de19b22)
 }
 
-var fileDescriptor_b686cdb126d509db = []byte{
+var fileDescriptor_source_context_4ade4e806de19b22 = []byte{
 	// 184 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x52, 0x49, 0xcf, 0xcf, 0x4f,
 	0xcf, 0x49, 0xd5, 0x2f, 0x28, 0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0xce, 0x2f, 0x2d,