packaging: engine-cleanup: drop user as well

currently we drop database, but we create user as well,
no reason why not to attempt remove it.

Change-Id: I5cc437890d7cce686329435c12d82a50ab0df4b0
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>