title: Add existing VM to TheForeman
body: <p>I recently installed the foreman on a server and I want to add an existing VM as a host in foreman, but it seems that I can't achieve this through the GUI. The only option I have found is to add a NEW host, not an existing one. My VM wasn't registered with a puppet master either. Do I need to install puppet on my VM and add it manually to the puppet master that foreman includes? Is there a simpler way to do this with foreman's GUI?</p>