When I change domain name of host, then 'certname' filed doesn't get updated.
That causes that puppet can not run after next reprovisioning.

See attached file, where I use python-foreman client to inspect host's fields,
before and after domain name change.

I am trying to change domain name of my machine from "qa.example.com"
to "scl.example.com".

The 'certname' field is same before and after domain change:

"""
u'certname': u'jenkins-vm-22.qa.example.com',
u'name': u'jenkins-vm-22.scl.example.com',
"""

The problem is reproducible from webui as well.