events: simplify handling qubesd reconnect

Retry connection on any OSError, instead of only few selected error
types. For example PermissionError may happen too (when socket is
created, but before it gets appropriate mode), which wasn't listed.

qubesadmin/events/__init__.py

@@ -124,9 +124,7 @@ class EventsDispatcher(object):
         while True:
             try:
                 yield from self._listen_for_events(vm)
-            except (ConnectionRefusedError, ConnectionResetError,
-                    FileNotFoundError,
-                    qubesadmin.exc.QubesDaemonCommunicationError):
+            except (OSError, qubesadmin.exc.QubesDaemonCommunicationError):
                 pass
             if not reconnect:
                 break