Handle debug messages cleanly

This changes from:

  2017-09-06 18:17:37.173853 | TASK [debug]
  2017-09-06 18:17:37.216661 | localhost | ok:
  2017-09-06 18:17:37.216882 | localhost | {
  2017-09-06 18:17:37.216967 | localhost |   "msg": "Job triggered from https://review.openstack.org/#/c/501485"
  2017-09-06 18:17:37.217047 | localhost | }

to:

  2017-09-06 18:20:34.383995 | TASK [debug]
  2017-09-06 18:20:34.429648 | Job triggered from https://review.openstack.org/#/c/501485

Change-Id: Iac39124c2a3b286215d175f98742d00ec5a12778
2 files changed