Merge pull request #3877 from ansible/backport-external-log-fix

backport a fix to external logging aggregation

awx/main/utils/handlers.py

@@ -294,6 +294,7 @@ class AWXProxyHandler(logging.Handler):
         super(AWXProxyHandler, self).__init__(**kwargs)
         self._handler = None
         self._old_kwargs = {}
+        if settings.LOG_AGGREGATOR_AUDIT:
             self._auditor = logging.handlers.RotatingFileHandler(
                 filename='/var/log/tower/external.log',
                 maxBytes=1024 * 1024 * 50, # 50 MB