[Ready for Review] after role deactivation stop services and remove HA resources

Once that PR is reviewed and accepted, I can start to finish the feature for the other barclamps as well. 
So please have a look at this one, as it will be similar to the other barclamps.
I'm pretty sure that shouldn't be there.  If you are getting the `Missing revision attribute` error then I guess that's probably because the role is no longer applied to that node, so the `crowbar-revision` attribute from `bc-template-keystone.json` is no longer present.  This is a fundamental problem with the role removal mechanism and we probably need a discussion how to fix it, preferably with @vuntz involved.