Added help documentation for kolla-ansible upgrade
Added help documentation for kolla-ansible upgrade

Change-Id: I6a2672362da5ae69e8417e334a170c3c68c1307c
Closes-Bug: #1569971

dardelean/kolla-ansible,coolsvap/kolla,dardelean/kolla-ansible,coolsvap/kolla,dardelean/kolla-ansible,stackforge/kolla,openstack/kolla,intel-onp/kolla,stackforge/kolla,rahulunair/kolla,GalenMa/kolla,mandre/kolla,mrangana/kolla,GalenMa/kolla,tonyli71/kolla,tonyli71/kolla,rahulunair/kolla,stackforge/kolla,openstack/kolla,nihilifer/kolla,mandre/kolla,nihilifer/kolla,mrangana/kolla,intel-onp/kolla,coolsvap/kolla,mandre/kolla