Comment 1 for bug 1988550

So I found the underlying issue being this commit [1]. This contradicts how other services define the principal using `fqdn_$NETWORK`, e.g. [2]. I believe we should use the latter in all the other places as well, e.g. [3] which causes the mismatch in ipa of this issue.

[1]: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/815598
[2]: https://opendev.org/openstack/tripleo-heat-templates/src/commit/a6576e1c5980b4ddcf292599037eb089975aa76f/deployment/nova/nova-modular-libvirt-container-puppet.yaml#L781
[3]: https://opendev.org/openstack/tripleo-heat-templates/src/commit/a6576e1c5980b4ddcf292599037eb089975aa76f/deployment/ipa/ipaservices-baremetal-ansible.yaml#L107