Similar to the one-shot in upstream pmr, but it can be used with mult…

…iple projects. This is useful if you have something else handling the scheduling of pmr runs like cron or jenkins

process-merge-requests

@@ -322,6 +322,9 @@ def main():
     group2.add_argument(
         '--project_list', metavar=_('PROJECT'), nargs="+",
         help=_("name of the launchpad project to process"))
+    parser.add_argument(
+        "--no-loop", action='store_true', default=False,
+        help=_("Check all projects for things to land once, then exit"))
     parser.add_argument("-u", "--user",
                         help="Specify launchpad user id", metavar="USER")
     parser.add_argument("--credentials",
@@ -356,6 +359,8 @@ def main():
                     _logger.error(_("No such project: %s"), project_name)
                 else:
                     merge_mergable_on_project(project, ns.user, ns.credentials)
+            if ns.no_loop:
+                break
             time.sleep(60)
     except KeyboardInterrupt:
         pass