Set cinder auth_strategy to keystone explicitely
Set cinder auth_strategy to keystone explicitely

Default value for auth_strategy changed for Cinder in Liberty
release from 'noauth' to 'keystone'. Therefore relying on
default value makes Cinder fail in Kilo. This patch covers
both releases by setting auth strategy to 'keystone' explicitely

Change-Id: Ic1f45fd43e0a94ca1dbfc63e90e2756c40453352
Closes-Bug: #1492233

negronjl/kolla,fdumpling/kolla,coolsvap/kolla,chenzhiwei/kolla,openstack/kolla,intel-onp/kolla,mrangana/kolla,mrangana/kolla,intel-onp/kolla,openstack/kolla,toby82/kolla,nihilifer/kolla,coolsvap/kolla,fdumpling/kolla,mandre/kolla,toby82/kolla,coolsvap/kolla,tonyli71/kolla,dardelean/kolla-ansible,mandre/kolla,GalenMa/kolla,tonyli71/kolla,rajalokan/kolla,rahulunair/kolla,rahulunair/kolla,fdumpling/kolla,limamauricio/mykolla,negronjl/kolla,limamauricio/mykolla,chenzhiwei/kolla,stackforge/kolla,limamauricio/mykolla,mandre/kolla,negronjl/kolla,dardelean/kolla-ansible,rajalokan/kolla,chenzhiwei/kolla,dardelean/kolla-ansible,nihilifer/kolla,stackforge/kolla,toby82/kolla,stackforge/kolla,GalenMa/kolla,rajalokan/kolla