Merge pull request #3017 from ryanpetrello/beat-shelve-error

close the persistent shelve when we're done checking it

Reviewed-by: Alan Rominger <arominge@redhat.com>
             https://github.com/AlanCoding

awx/main/management/commands/run_dispatcher.py

@@ -87,6 +87,11 @@ class Command(BaseCommand):
         except Exception:
             logger.exception('{} is corrupted, removing.'.format(sched_file))
             sched._remove_db()
+        finally:
+            try:
+                sched.close()
+            except Exception:
+                logger.exception('{} failed to sync/close'.format(sched_file))
 
         beat.Beat(
             30,