1. Steps for Kolla Upgrade:
    A. Install openstack liberty using kolla(stable/liberty)

    1. Installing kolla version (stable/liberty)

    2. kolla-build  --tag 1.1.1  --registry node1:4000 --push

    3. Setting parameter <openstack_version: 1.1.1> in global.yml file

    4.  kolla-ansible deploy

 B. upgrade openstack liberty to Mitka

     1. re-install kolla version (stable/amitaka)

     2. kolla-build --tag 2.0.0 --registry node1:4000 --push

    3. Setting parameter <openstack_version: 2.0.0>

    4. kolla-ansible upgrade