[cli-ref] Update python-keystoneclient to 2.3.1
[cli-ref] Update python-keystoneclient to 2.3.1

Change-Id: Ia39499bedeb2e0a3f3ebddeb634dc52238be8f70

openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals