packaging: setup: adding local storage domain name to answer file

Adding local storage domain name value to
answer file to allow automated AIO setup.

Change-Id: Ic3bdb5b101a4b6b3261cad62c4977b4529e77a15
Bug-Url: https://bugzilla.redhat.com/1125920
Signed-off-by: Simone Tiraboschi <stirabos@redhat.com>