periodic_scheduler: tweak logging style slightly

The current log output looks like:
2014-05-19T14:23:28.824566-04:00 localhost periodic_scheduler: running /sbin/crash_sender for crash_sender
2014-05-19T14:23:28.827682-04:00 localhost periodic_scheduler: crash_sender completed

The new output is more consistent:
2014-05-19T14:23:28.824566-04:00 localhost periodic_scheduler: crash_sender: running /sbin/crash_sender
2014-05-19T14:23:28.827682-04:00 localhost periodic_scheduler: crash_sender: job completed

BUG=None
TEST=ran it

Change-Id: I0a542d63c15c5c3a9d10683f424b2190c983269d
Reviewed-on: https://chromium-review.googlesource.com/200382
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed