message: build: bump googletest version.
  This gives us working --test_filter and general improvements.
diff: @@ -109,7 +109,7 @@ REPOSITORY_LOCATIONS = dict(
  strip_prefix = "twitter.common.finagle-thrift-0.3.9/src",
  ),
  com_google_googletest = dict(
  - commit = "43863938377a9ea1399c0596269e0890b5c5515a",
  + commit = "3d5612182581df64acc12d2633e473decf5adc47", # Aug 29, 2018
  remote = "https://github.com/google/googletest",
  ),
  com_google_protobuf = dict(
  