Actually.  After looking at further tasks needed for this module.  I see the StrictHostChecking: needs overriding.  

This needs setting in ssh config directory for user foreman-proxy.  This is generally located $home/.ssh/config.  

I'd like to keep everything together from this module which includes (config and ssh keys) I'll add them to foreman-proxy user $home/ssh/config.  

The default foreman-proxy home dir is located in /usr/share/foreman-proxy, so I will change the default value here to match.

This means that $home=/usr/share/foreman-proxy 

and keys will be stored at: $home=/usr/share/foreman-proxy/.ssh

unless anyone has strong objections?