message: ci: use local protobuf_bzl for consumer as well as standalone bazel builds.
diff: @@ -8,6 +8,16 @@ local_repository(
  load("//bazel:repositories.bzl", "envoy_dependencies")
  load("//bazel:cc_configure.bzl", "cc_configure")
  -envoy_dependencies(path = "@envoy//ci/prebuilt")
  +envoy_dependencies(
  + path = "@envoy//ci/prebuilt",
  + skip_protobuf_bzl = True,
  +)
  +
  +new_local_repository(
  + name = "protobuf_bzl",
  + path = "/thirdparty/protobuf-3.2.0",
  + # We only want protobuf.bzl, so don't support building out of this repo.
  + build_file_content = "",
  +)
  cc_configure()
  