Comment 17 for bug 1924751

Reviewed: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/787746
Committed: https://opendev.org/openstack/tripleo-heat-templates/commit/50c089a1f6bb125be19d4a80c666ee8089684006
Submitter: "Zuul (22348)"
Branch: stable/victoria

commit 50c089a1f6bb125be19d4a80c666ee8089684006
Author: Brendan <email address hidden>
Date: Wed Apr 21 18:39:33 2021 +1000

    Add RootStackName to group_vars

    After a Overcloud deployment, /etc/hosts on the undercloud
    will be populated with entries for each overcloud node. Since
    we use the same tripleo_ansible roles for both the undercloud
    and overcloud deployment, the /etc/hosts file on the Director
    will be removed by undercloud install / upgrade operations.

    This is outlined here:
    https://bugzilla.redhat.com/show_bug.cgi?id=1933528

    This change adds the RootStackName to the group_vars,
    this is then used by the tripleo_host_entries role in
    tripleo-ansible to write host entries per stack.

    Closes-Bug: #1924751
    Resolves: rhbz#1933528
    Change-Id: I9e53187f37d41d7180e66db1239b5f9c8846addd