message: Allow an earlier version of bazel to be used on TF2
  Summary:
  For temporary compatibility with the earlier version of bazel in the build
  machines, we allow it in the TF2 branch
  Test Plan: Configure and build locally.
  Reviewers: #tensorflow, hakons
diff: @@ -49,7 +49,7 @@ _TF_BAZELRC_FILENAME = '.tf_configure.bazelrc'
  _TF_WORKSPACE_ROOT = ''
  _TF_BAZELRC = ''
  _TF_CURRENT_BAZEL_VERSION = None
  -_TF_MIN_BAZEL_VERSION = '0.27.1'
  +_TF_MIN_BAZEL_VERSION = '0.24.1'
  _TF_MAX_BAZEL_VERSION = '0.29.1'
  NCCL_LIB_PATHS = [
  