Description of problem: Currently when updating packages on overcloud nodes (using "openstack overcloud stack update" command) packages are updated by calling "yum update". As discussed on mailing list before, it would be nice to use logic in puppet modules to take care of updating any openstack-related packages. The benefit is that puppet modules already include all the complex logic of upgrading/restarting services in proper order. Upstream patch (still WIP) is here: https://review.openstack.org/#/c/190918/
This patch was already merged and released as bug 1259905. *** This bug has been marked as a duplicate of bug 1259905 ***