Added some more scm options

Options added to git scm:
    * scm-name: Unique SCM name
    * reference; Path of the reference repo to use during clone

Change-Id: Ic4e233a283513579c30412e3638ed9c73b570d54
Signed-off-by: David Caro <dcaroest@redhat.com>
Merge "Added some more scm options"