'Openstack: hostname is appended by "novalocal"

I have made a heat template that starts up some servers and installs puppet. In the heat template I have put for the servers their hostname by doing:

properties:
    name: dir

Some servers actually gets their hostname, but there are a few that gets their hostname appended by ".novalocal".

An example for a server I have

properties:
    name: server1

actual hostname: server1.novalocal

Any idea what cause this? I am at a total loss.

openstack heat

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