Change ansible to search for latest tag
Change ansible to search for latest tag

In master, ansible should look for the latest tag
by default.  For releases, it will look for that
specific release tag.

Closes-bug: #1482294
Change-Id: Iccaab6b70d7fb386b5bd1ce21f1afa379a76dd81

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