Use pgrep radosgw to determine if rados gateway is running.
Fixes: 7528
Signed-off-by: Warren Usui <warren.usui@inktank.com>
Merge pull request #1333 from ceph/wip-s3radoscheck-wusui

Use pgrep radosgw to determine if rados gateway is running.

Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>