webadmin: guide me local cluster - added note on sd

Local Cluster/DC GuideMe dialog:
* Replaced 'Fully configured and ready for use' message
  with 'Configuration completed' - as in shared storage.
* Added a note that a local storage domain must be
  attached to the DC and activated.

Change-Id: Ic2f3f59cdcf30721bbefc9bb84d97973faa36f99
Bug-Url: https://bugzilla.redhat.com/1023484
Signed-off-by: Daniel Erez <derez@redhat.com>