Is it possible to upgrade openstack ansible from one major release to another, along with the os distribution upgrade all in one flow ? I mean, as of now we are doing the upgrade as two step process. 

first we are upgrading the os of the hosts and then the os of the lxc containers and then re running the existing openstack version playbooks.  Next , we are upgrading to major release of OSA.

This two step process is doubling our effort and time to upgrade to a major version.

Is it possible to download and run the major release playbooks soon after the os upgrades ? instead of rerunning the existing playbook again and then download and running next version playbooks ?