message: Adding another disabling mechanism for plugins
diff: @@ -59,6 +59,9 @@ def tf_xla_py_test(name, srcs=[], deps=[], tags=[], data=[], main=None,
  backend_args += ["--test_device=" + plugins[backend]["device"],
  "--types=" + plugins[backend]["types"]]
  backend_tags += plugins[backend]["tags"]
  + backend_args += plugins[backend]["args"]
  + backend_deps += plugins[backend]["deps"]
  + backend_data += plugins[backend]["data"]
  else:
  fail("Unknown backend {}".format(backend))
  