moved setup.py to cekit, providing both concreate and cekit cmd
moved setup.py to cekit, providing both concreate and cekit cmd

Signed-off-by: David Becvarik <5f8bfed0476c7565ee75c945c35c09494e483a4b@redhat.com>

jboss-container-images/concreate,jboss-container-images/concreate,jboss-container-images/concreate