Fix build of protobuf-related components to support Bazel 0.22

- Bumped version of protobuf to 3.6.1.3 (includes fix for Bazel 0.22)
- Removed all protobuf and grpc dependencies from deps.json. Instead,
  depends solely on what's provided by the external grpc and protobuf
  workspaces.
- Use OSGi-wrapped protobuf and grpc JARs built with Bazel for runtime
- Add missing netty-related bundles to onos-thirdparty-base (required
by grpc)

Note, build with Bazel 0.22 is still broken because of
osgi_java_library.bzl, unless the following build arg is used:
build --incompatible_string_is_not_iterable=false

It seems the error is caused by dead code in osgi_java_library.bzl
that should be removed.

Change-Id: I749f1de25902bf9df5242444380f7224bc99b4b5
diff --git a/protocols/gnmi/ctl/BUILD b/protocols/gnmi/ctl/BUILD
index db4cd44..9a7ee7c 100644
--- a/protocols/gnmi/ctl/BUILD
+++ b/protocols/gnmi/ctl/BUILD
@@ -3,7 +3,7 @@
     "//protocols/gnmi/stub:onos-protocols-gnmi-stub",
     "//protocols/grpc/api:onos-protocols-grpc-api",
     "//protocols/grpc/ctl:onos-protocols-grpc-ctl",
-    "//protocols/grpc:grpc-core-repkg",
+    "//protocols/grpc:grpc-bundle-core",
     "@com_google_protobuf//:protobuf_java",
     "@io_grpc_grpc_java//netty",
     "@io_grpc_grpc_java//protobuf-lite",