Undercloud CI jobs fail with "Configured hostname is not fully qualified."

[Jose Luis Franco]

The undercloud upgrades job is failing during undercloud installation with the following errors:

2019-02-20 01:45:48 | + openstack undercloud install
2019-02-20 01:45:50 | Deprecated: Option "ipxe_deploy" from group "DEFAULT" is deprecated. Use option "ipxe_enabled" from group "DEFAULT".
2019-02-20 01:45:50 | Configured hostname is not fully qualified.
2019-02-20 01:45:50 | An error occurred during configuration validation, please check your host configuration and try again. Error message: Configured hostname is not fully qualified.

http://logs.openstack.org/25/637925/1/check/tripleo-ci-centos-7-containerized-undercloud-upgrades/154b304/logs/undercloud/home/zuul/undercloud_install.log.txt.gz

Which is legit, as the undercloud hostname is not qualified: http://logs.openstack.org/25/637925/1/check/tripleo-ci-centos-7-containerized-undercloud-upgrades/154b304/logs/undercloud/etc/hostname.txt.gz

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/638122

[Alex Schultz (alex-schultz)]

Already addressed via https://review.openstack.org/#/c/637938/

[OpenStack Infra (hudson-openstack)]

Change abandoned by Jose Luis Franco (<email address hidden>) on branch: master
Review: https://review.openstack.org/638122
Reason: Fixed in https://review.openstack.org/#/c/637938/2