[cli-ref] Update python-glanceclient to 2.3.0
[cli-ref] Update python-glanceclient to 2.3.0

Change-Id: I66df61d10be06d7dab49004f190c56273a712ab4

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