Switch off creating a keystone admin endpoint by default

With the depending patch, the endpoint will still be created for
heat tests, so we can turn it off for everyone else.

Depends-On: https://review.opendev.org/c/openstack/openstacksdk/+/777343
Change-Id: I0dc7d6cedd07e942b9f23b26a785b386aff41fbc
1 file changed