swift proxy-server keep logging "Invalid user token - deferring reject downstream".

Issue

• After initial deployment of undercloud, swift proxy-server keeps logging the following error :

Sep 16 05:21:07 instack.localdomain proxy-server[27467]: Invalid user token - deferring reject downstream
Sep 16 05:21:07 instack.localdomain proxy-server[27467]: 192.0.2.1 192.0.2.1 16/Sep/2015/09/21/07 GET /info HTTP/1.0 200 - - - - 738 - tx76694f16d3c74c27bf7d4-0055f93483 - 0.0006 - - 1442395267.932071924 1442395
Sep 16 05:21:09 instack.localdomain proxy-server[27467]: Invalid user token - deferring reject downstream

• This is noticed in swift.log , messages or from systemd commands . The continuous logging may swell the log file to around 500M+ a day. Since log rotation is enabled by default, this issue will Not cause concern to the environment.