Add Conflicts on mod_ssl because it interferes with mod_proxy and dogtag
    
    We had this in v1 but removed it with v2 because we no longer used
    TurboGears for the UI. Because we are now proxying requests to dogtag
    we need to re-add this so that mod_ssl doesn't interfere with our
    communication.
    
    mod_ssl always blindly registers itself as the SSL provider for mod_proxy.
    mod_nss will only register itself if mod_ssl hasn't already done so.
    
    https://fedorahosted.org/freeipa/ticket/2177