
When using a non-standard host for keypair setup (such as a utility container) it is necessary to set a custom python interpreter which has access to openstacksdk. This commit provides a variable to do this in the same style as used for service setup hosts. Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/777779 Change-Id: Ia2056cf287b666d4d3d8d36f06772c5117ca6bf7