Add copr repo for RHEL7
move the network into 2 new roles

We do this so we can get the bridges set up.  Then on the next activity
collect that IP info to lay down the routes.  Then on the third activity
we actually set up docker/kube
ignore errors for firewalld, in case they are caused by firewalld being
turned off
use the file created by nm, not one we create ourselves
drop the "save yes" nmcli command, as it doesn't exist in older systems
and doesn't appear necessary in f21 where it does exist.