undercloud-minion job failing due to incorrect minion hostname

[Alex Schultz]

The minion is currently failing because the hostname is not fully qualified.

https://logs.opendev.org/51/662351/22/check/tripleo-ci-centos-7-containers-undercloud-minion/35aa903/logs/subnode-2/home/zuul/minion_install.log.txt.gz

2019-08-05 17:24:50 | + openstack undercloud minion install
2019-08-05 17:24:52 | Configured hostname is not fully qualified.
2019-08-05 17:24:52 | An error occurred during configuration validation, please check your host configuration and try again. Error message: Configured hostname is not fully qualified.
idation, please check your host configuration and try again. Error message: Configured hostname is not fully qualified.

[Alex Schultz (alex-schultz)]

https://review.opendev.org/#/c/674686/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/674686
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=5071d16ceae42338ab92da28178a6b6c5eb55329
Submitter: Zuul
Branch: master

commit 5071d16ceae42338ab92da28178a6b6c5eb55329
Author: Alex Schultz <email address hidden>
Date: Mon Aug 5 14:05:40 2019 -0600

    Configure minion hostname

    We should set the minion_hostname in the minion.conf similar to what we
    do for the undercloud.

    Change-Id: Iacd6e9860b7aabff65b6c2d383d488903a9a0287
    Closes-Bug: #1839025