Update a job's minion list to include minion lists forwarded by syndic

This allows the job cache to include minions matched by lower-level
masters for a given job.

salt/master.py

@@ -1186,6 +1186,27 @@ class AESFuncs(object):
             log.error('Received minion error from [{minion}]: '
                       '{data}'.format(minion=load['id'],
                                       data=load['data']['message']))
+        for event in load.get('events', []):
+            event_data = event.get('data', {})
+            if 'minions' in event_data:
+                jid = event_data.get('jid')
+                if not jid:
+                    # Should not happen but if it ever does we definitely want
+                    # to know about it.
+                    log.warning('No jid in event: %s', event_data)
+                else:
+                    minions = event_data['minions']
+                    try:
+                        salt.utils.job.store_minions(
+                            self.opts,
+                            jid,
+                            minions,
+                            mminion=self.mminion)
+                    except (KeyError, salt.exceptions.SaltCacheError) as exc:
+                        log.error(
+                            'Could not add minion(s) {0} for job {1}: {2}'
+                            .format(minions, jid, exc)
+                        )
 
     def _return(self, load):
         '''