openvpn / server / ccd files: Fix hosts that had the old transition iad2 vpn
    
    When we moved datacenters we had iad2 pointing to 192.168.20 at various
    points to migrate things. We should no longer have any hosts using that
    ip range. Move them all back.
    
    Signed-off-by: Kevin Fenzi <kevin@scrye.com>