Fix use of new openstacksdk connection
Fix use of new openstacksdk connection

We store the created conn on the instance, but we never pull it back off
if there is already one present.

Change-Id: I2d890dd206d4ddf67fa42d798e6fd2c652799785

dtroyer/python-openstackclient,dtroyer/python-openstackclient,openstack/python-openstackclient,openstack/python-openstackclient