memcache servicegroup driver does not logs connection issues

[Attila Fazekas]

servicegroup_driver = mc
memcached_servers = blabla # blabla does not exists

Neither n-cpu or n-api log indicates any connection issue or give any clue the join was unsuccessful, the n-cpu logs the same two DEBUG line regardless to the success.

The services are reported down, with nova service-list, as expected.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/136351

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/136351
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=746fb8ea7488575d1043b5d66c4fe6d16b7f9be6
Submitter: Jenkins
Branch: master

commit 746fb8ea7488575d1043b5d66c4fe6d16b7f9be6
Author: jichenjc <email address hidden>
Date: Wed Nov 19 10:23:01 2014 +0800

    Indicate whether service is down for mc driver

    memcache driver for service didn't log any clue
    whether the service is down or not. This patch add a
    log to indicate it at DEBUG level.

    Closes-Bug: #1382564

    Change-Id: I05e12b56411f4475d1ef50e90e09abf75d7355b0