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/p4runtime/ctl/BUILD b/protocols/p4runtime/ctl/BUILD
index 66aab43..5c9133d 100644
--- a/protocols/p4runtime/ctl/BUILD
+++ b/protocols/p4runtime/ctl/BUILD
@@ -5,7 +5,7 @@
     "//protocols/p4runtime/api:onos-protocols-p4runtime-api",
     "//protocols/p4runtime/proto:onos-protocols-p4runtime-proto",
     "@com_google_protobuf//:protobuf_java",
-    "//protocols/grpc:grpc-core-repkg",
+    "//protocols/grpc:grpc-bundle-core",
     "@io_grpc_grpc_java//netty",
     "@io_grpc_grpc_java//protobuf-lite",
     "@io_grpc_grpc_java//stub",