In some cases (see issue #1067) with state=restarted, a failure to stop
the service (which wasn't running) would appear to the module to be a
failure to restart the service even though it successfully started the
service.  This changes the behavior of the service module to focus
on the return code of the start command.  If the rc of stop is not
0 and the rc of start does equal 0, it considers the service
successfully restarted.  It then ignores the rc, stdout, and stderr
from the unsuccessful stop command.