Comment 2 for bug 1806684

Reviewed: https://review.openstack.org/619112
Committed: https://git.openstack.org/cgit/openstack/instack-undercloud/commit/?id=227ce3fc90e5b07d7902ee6299e65b2c2ba9cf9b
Submitter: Zuul
Branch: stable/rocky

commit 227ce3fc90e5b07d7902ee6299e65b2c2ba9cf9b
Author: Carlos Camacho <email address hidden>
Date: Wed Nov 21 00:05:14 2018 +0100

    Get the stack name if possible before running the validations group

    If we run the group validations in the Undercloud and we
    do not specify the stack name, this will fail if the
    Overcloud stack is not called 'overcloud'.

    In this case we try to fetch the stack name and we compare it
    with the swift containers to match the deployment plan name
    if there is a match, then we know the stack name.

    Change-Id: Ib2e27b1b43f573385c089e57bd2290daac49d814
    Closes-Bug: 1806684
    Resolves: rhbz#1573120