[VOL-4289]  Proto changes for gRPC migration

Change-Id: I317a0a865ccf78d0c37aa229c50d293a3f66c8bb
diff --git a/vendor/modules.txt b/vendor/modules.txt
new file mode 100644
index 0000000..f2ead8c
--- /dev/null
+++ b/vendor/modules.txt
@@ -0,0 +1,107 @@
+# github.com/golang/protobuf v1.5.2
+## explicit
+github.com/golang/protobuf/proto
+github.com/golang/protobuf/protoc-gen-go/descriptor
+github.com/golang/protobuf/ptypes
+github.com/golang/protobuf/ptypes/any
+github.com/golang/protobuf/ptypes/duration
+github.com/golang/protobuf/ptypes/empty
+github.com/golang/protobuf/ptypes/timestamp
+# golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
+golang.org/x/net/http/httpguts
+golang.org/x/net/http2
+golang.org/x/net/http2/hpack
+golang.org/x/net/idna
+golang.org/x/net/internal/timeseries
+golang.org/x/net/trace
+# golang.org/x/sys v0.0.0-20210510120138-977fb7262007
+golang.org/x/sys/internal/unsafeheader
+golang.org/x/sys/unix
+# golang.org/x/text v0.3.5
+golang.org/x/text/secure/bidirule
+golang.org/x/text/transform
+golang.org/x/text/unicode/bidi
+golang.org/x/text/unicode/norm
+# google.golang.org/genproto v0.0.0-20210924002016-3dee208752a0
+## explicit
+google.golang.org/genproto/googleapis/api/annotations
+google.golang.org/genproto/googleapis/rpc/status
+# google.golang.org/grpc v1.41.0
+## explicit
+google.golang.org/grpc
+google.golang.org/grpc/attributes
+google.golang.org/grpc/backoff
+google.golang.org/grpc/balancer
+google.golang.org/grpc/balancer/base
+google.golang.org/grpc/balancer/grpclb/state
+google.golang.org/grpc/balancer/roundrobin
+google.golang.org/grpc/binarylog/grpc_binarylog_v1
+google.golang.org/grpc/codes
+google.golang.org/grpc/connectivity
+google.golang.org/grpc/credentials
+google.golang.org/grpc/encoding
+google.golang.org/grpc/encoding/proto
+google.golang.org/grpc/grpclog
+google.golang.org/grpc/internal
+google.golang.org/grpc/internal/backoff
+google.golang.org/grpc/internal/balancerload
+google.golang.org/grpc/internal/binarylog
+google.golang.org/grpc/internal/buffer
+google.golang.org/grpc/internal/channelz
+google.golang.org/grpc/internal/credentials
+google.golang.org/grpc/internal/envconfig
+google.golang.org/grpc/internal/grpclog
+google.golang.org/grpc/internal/grpcrand
+google.golang.org/grpc/internal/grpcsync
+google.golang.org/grpc/internal/grpcutil
+google.golang.org/grpc/internal/metadata
+google.golang.org/grpc/internal/resolver
+google.golang.org/grpc/internal/resolver/dns
+google.golang.org/grpc/internal/resolver/passthrough
+google.golang.org/grpc/internal/resolver/unix
+google.golang.org/grpc/internal/serviceconfig
+google.golang.org/grpc/internal/status
+google.golang.org/grpc/internal/syscall
+google.golang.org/grpc/internal/transport
+google.golang.org/grpc/internal/transport/networktype
+google.golang.org/grpc/internal/xds/env
+google.golang.org/grpc/keepalive
+google.golang.org/grpc/metadata
+google.golang.org/grpc/peer
+google.golang.org/grpc/resolver
+google.golang.org/grpc/serviceconfig
+google.golang.org/grpc/stats
+google.golang.org/grpc/status
+google.golang.org/grpc/tap
+# google.golang.org/protobuf v1.27.1
+google.golang.org/protobuf/encoding/prototext
+google.golang.org/protobuf/encoding/protowire
+google.golang.org/protobuf/internal/descfmt
+google.golang.org/protobuf/internal/descopts
+google.golang.org/protobuf/internal/detrand
+google.golang.org/protobuf/internal/encoding/defval
+google.golang.org/protobuf/internal/encoding/messageset
+google.golang.org/protobuf/internal/encoding/tag
+google.golang.org/protobuf/internal/encoding/text
+google.golang.org/protobuf/internal/errors
+google.golang.org/protobuf/internal/filedesc
+google.golang.org/protobuf/internal/filetype
+google.golang.org/protobuf/internal/flags
+google.golang.org/protobuf/internal/genid
+google.golang.org/protobuf/internal/impl
+google.golang.org/protobuf/internal/order
+google.golang.org/protobuf/internal/pragma
+google.golang.org/protobuf/internal/set
+google.golang.org/protobuf/internal/strs
+google.golang.org/protobuf/internal/version
+google.golang.org/protobuf/proto
+google.golang.org/protobuf/reflect/protodesc
+google.golang.org/protobuf/reflect/protoreflect
+google.golang.org/protobuf/reflect/protoregistry
+google.golang.org/protobuf/runtime/protoiface
+google.golang.org/protobuf/runtime/protoimpl
+google.golang.org/protobuf/types/descriptorpb
+google.golang.org/protobuf/types/known/anypb
+google.golang.org/protobuf/types/known/durationpb
+google.golang.org/protobuf/types/known/emptypb
+google.golang.org/protobuf/types/known/timestamppb