Use a wrapper shell script instead of a bash function to wrap bazel
Use a wrapper shell script instead of a bash function to wrap bazel

The previous method of wrapping bazel wasn't passed through child process
so it was not working well with latest change in TensorFlow's configure
script that calls bazel.

Change-Id: I606e5baf26684e43445f7fab44461d4d25a36657

bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration