The dnf stack is written and tested against rpm 4.x. So if we want to use dnf for packaging,
we should also use rpm 4 - there's simply too much work involved in making rpm 5 work with it due
to significant API differences, and supporting that going forward.
(From OE-Core rev: 2358e786ec8d1199d90e181eb5d8d00816f669b4)
Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>