Renaming Status.currentFqdn to Status.ownedFqdns

The following discussion from !3 (merged) should be addressed:

• @alossent started a discussion:

  We may need to rename this to be more specific, but I'm not sure how exactly.

  The reference for FQDNs is KB0006299. There are 2 types of FQDNs an app can use:

  1. the Openshift-standard ones <routename>-<projectname>.app.cern.ch
  2. discrete DNS names, assigned by webservices or other sources, like mysite.web.cern.ch or myapp.cern.ch or myservice.docs.cern.ch.

  We want to store the 2nd case here, while the first in implicit. The .status.CurrentFqdns should eventually include all the DNS names being used by the app (including any <routename>-<projectname>.app.cern.ch).

  What about OwnedFqdns? Please also include the explanation above in code comments so we don't forget this difference between implicit/explicit FQDNs.