integration tests flooded with newconnectionerror

[gordon chung]

at initial startup, a lot of errors are thrown regarding connection. it then stablises and doesn't throw it anymore.

 2015-11-24 19:12:23.595 13404 ERROR ceilometer.dispatcher.gnocchi [-] Connection error: HTTPConnectionPool(host='127.0.0.1', port=8041): Max retries exceeded with url: /v1/resource/swift_account/34b0d10d35534f06aa652a8661861909/metric/storage.objects.size/measures (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7f434624f050>: Failed to establish a new connection: [Errno 111] Connection refused',))

http://logs.openstack.org/32/243032/3/check/gate-ceilometer-dsvm-integration/a3c96a6/logs/screen-ceilometer-collector.txt.gz

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/253635