Motivation:
I have a small cluster managed by foreman, where foreman is managing DNS for the domain but not DHCP.
If an IP address for one of my host changes, the DNS goes out of sync (pointing to the old IP) until
I manually rebuild config, even though foreman sees the updated IP (from puppet reports) and changes
the host entry to match.

Desired outcome:
I would like the IP/hostname in my DNS to match the IP/hostname in Foreman, even if the IP was changed
by a fact upload.

Proposed change:
Add a setting called `enable_unattended_orchestration`, which enables orchestration even when
SETTINGS[:unattended] is true. Add a check of that setting to this line:
https://github.com/theforeman/foreman/blob/1f6a9b2c84ae629dda55330b7a4d8f9ed4e948dc/app/models/host/managed.rb#L297

I plan on submitting this change personally.