All of the CRDs that we put onto a cluster are in a group that's <something>.aerogear.org such as push.aerogear.org or mdc.aerogear.org or mobile-security-service.aerogear.org. The MobileClient CRD is in mobile.k8s.io.

I think we should change this, to avoid clashing with any potential future mobile.k8s.io group that could be created by the kubernetes project itself. Maybe it should be in the existing mdc.aerogear.org group?