Bazel CI pipeline broken at HEAD on all platforms

[jin]

ERROR: /var/lib/buildkite-agent/builds/buildkite-ubuntu1404-70nv-1/bazel/bazel-bazel/src/main/cpp/BUILD:69:1: Couldn't build file src/main/cpp/_objs/client/src/main/cpp/blaze.pic.o: C++ compilation of rule '//src/main/cpp:client' failed (Exit 1)
--
  | src/main/cpp/blaze.cc:37:28: fatal error: grpcpp/channel.h: No such file or directory
  | #include <grpcpp/channel.h>
  | ^
  | compilation terminated.
  | Target //src:bazel failed to build
  | Use --verbose_failures to see the command lines of failed build steps.
  | INFO: Elapsed time: 14.211s, Critical Path: 5.41s
  | FAILED: Build did NOT complete successfully
  | At least one test failed or was flaky.
  | 🚨 Error: The command exited with status 1

likely culprit: 52356e7

[jin]

Looks like OSS GRPC changed their references from grpc++ to grpcpp, but we are still referring to the older version.

grpc/grpc@c90a856

[jin]

rollback in progress https://bazel-review.googlesource.com/c/bazel/+/53673

[jin]

looks like our vendored GRPC C++ libs are 2 years old: https://github.com/bazelbuild/bazel/tree/master/third_party/grpc/include