Correct auth_plugin argument values
Correct auth_plugin argument values

The proper names have an underscore separating the version.

Change-Id: Ife00955246c6c2f39ca9d7aa63dae500dd4e9fd7

stackforge/python-openstacksdk,openstack/python-openstacksdk,dudymas/python-openstacksdk,dtroyer/python-openstacksdk,briancurtin/python-openstacksdk,mtougeron/python-openstacksdk,stackforge/python-openstacksdk,dudymas/python-openstacksdk,briancurtin/python-openstacksdk,mtougeron/python-openstacksdk,openstack/python-openstacksdk,dtroyer/python-openstacksdk