Additional py2 fixes for ACTS.

* Correctly propagate the message field of TestSignal
* Fix ability to import tel_test_utils directly

BUG=26883860

Change-Id: Ie0fbd1539a686d412dd8b6ba440f5576dd176907
2 files changed
tree: 66e61201571fa2f3285c97a46bffbd84052035c6
  1. acts/