Fix bug in service_stopper.

https://gerrit.chromium.org/gerrit/51254 introduced bug into the
service stopper logic where is_stopped was always true.

For example the most likely upstart status strings will create the
following values for is_stopped:

out_arr = ['tcsd start/running, process 507',
	   'tcsd stop/waiting',
           'status: Unknown job: tcsd_bogus'
          ]
for out in out_arr:
  is_stopped = 'start/running' not in out
  print is_stopped

>>> False
>>> True
>>> True

Previous change incorrectly assummed find would return 0 for a match
and 1 for not but it should have instead key'd off -1 for no match.

BUG=chrome-os-partner:19561
TEST=hardware_TPMCheck passes

Reviewed-on: https://gerrit.chromium.org/gerrit/56025
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Queue: Todd Broch <tbroch@chromium.org>
Tested-by: Todd Broch <tbroch@chromium.org>
(cherry picked from commit 7d6386a862470be63bc607fcc0c0eb2b288923df)

Change-Id: I8c4107d30f1af96d6047137430a053554645459c
Reviewed-on: https://gerrit.chromium.org/gerrit/56085
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Tested-by: Scott Zawalski <scottz@chromium.org>
1 file changed