Comment 8 for bug 1969971

Update on this issue.

n-c-c is configuring the hosts keys for each node for the following entries:

* private-address of the compute node on the cloud-compute relation, which in our env is the internal space

* hostname on cloud-compute relation data (which is the hostname w/o domain)

* reverse lookup entry of the private-address that in maas environments return the fqdn with the interface name at the beginning:

  ```
  >>> import charmhelpers.contrib.openstack.utils as ch_utils
  >>> print(ch_utils.get_hostname("192.168.52.50"))
  bond0.123.my-host.maas
  ```

  The correct entry is only returned for reverse lookup on the oam space which is the boot interface