packaging: move all packaging related to packaging

currently we manage packaging scripts all over the tree, sometimes in
different names than the file installed.

this patch collects all files to be under the packaging directory using
hierarchy similar to the installation and using same file naming.

Change-Id: I6d0bd7b8cd5381ddb80b4b2e5ee7df65bab487bc
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
packaging: engine-setup re-write using otopi

Change-Id: I4d5e3ac7927802326e324c9b98ada75b421638aa
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>
Signed-off-by: Alex Lourie <alourie@redhat.com>