packaging: setup: fix broken build

After a previous patch
(I0c62c94f3f7b3baaeab466f45586d1a123fe57cf)
engine-setup doesn't work anymore and previews
doesn't show all the desidered options.
Fixing it.

Change-Id: I0c62c94f3f7b3baaeab466f45586d1a123fe57cf
Signed-off-by: Simone Tiraboschi <stirabos@redhat.com>