Updated protoc container to include protoc-gen-grpc-gateway and protoc-gen-swagger.

Motivated by VOL-2629

Change-Id: I249a7b075d9c46e75e0d7ab773c6cab79b2fc7bc
diff --git a/VERSION b/VERSION
index 227cea2..7ec1d6d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.0.0
+2.1.0