Update openstack.common

This update brings in the new join_consumer_pool()
method of the message bus connection class.

Change-Id: Ie5b9bf93c9aaf8f4f85b47b2394969741ba5fef4
Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
Imported Translations from Transifex

Change-Id: I907d523fe7332f77a7cb5b9bdba88fe0c98bb618
Merge "Update openstack.common"
Merge "Imported Translations from Transifex"