packaging: setup: Fix appmode options order

Modified setup Application Mode options ordering to show
'Both' as last option, after 'Virt' and 'Gluster', as it's
more intuitive that way.

Change-Id: I194b236c20041187e3b95988069338784328a000
Signed-off-by: Lev Veyde <lveyde@redhat.com>
Bug-Url: https://bugzilla.redhat.com/1147678