Add swift information to cli chapter of End User Guide
Add swift information to cli chapter of End User Guide

Section section_swift_cli_howto.xml was not included in the
guide yet, add it.

Change-Id: Ie7bcbc3bc274c2a9c835474551abd8e708036f70

openstack/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,openstack/openstack-manuals,saeki-masaki/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,kairoaraujo/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,Akasurde/openstack-manuals,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,openstack/openstack-manuals,potsmaster/openstack-manuals,Akasurde/openstack-manuals,potsmaster/openstack-manuals,gongysh2004/openstack-manual