Comment 1 for bug 1624607

Reviewed: https://review.openstack.org/371866
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=e328ada3bd28076edf74d5461e4e0ff84d65413a
Submitter: Jenkins
Branch: master

commit e328ada3bd28076edf74d5461e4e0ff84d65413a
Author: Jeffrey Zhang <email address hidden>
Date: Sat Sep 17 10:31:36 2016 +0800

    Optimized the serial upgrade and reconfigure

    * add serial for reconfigure
    * set playbook serial by using variable
    * fix serial for barbican, influxdb and vmtp

    Closes-Bug: #1624607
    Change-Id: I66530c7736e1673a592eddbde75637825d12d9e2