Merge branch 'stable-2.15'

* stable-2.15:
  Migrate (i.e. move) `tools/bazel.rc` to `.bazelrc`

Change-Id: I37d0bb8be37dd4395d8dced82b781d01f589fb43
diff --git a/tools/bazel.rc b/.bazelrc
similarity index 100%
rename from tools/bazel.rc
rename to .bazelrc