SimpleSAMLphp

@sherakama This should have no effect on existing Sites installs; simply adding simpleSAMLphp as an option (preparing for moving to cloud).

Please do not delete the simplesamlphp branch after merge.
I agree with this. I have created a new branch for this work. Over time I wan't to move all of the environment specific code out of these profiles and into their own. We don't have a place for that right now so we will move this work to a 2.x branch and slow re-factor it all out.