We need to ensure there is a python dependency for the ofono python
test scripts. To do this without introducing the dependency
unnecessarily for the core ofono functionality, this patch splits
the tests into a separate package too.
[YOCTO #1705]
(From OE-Core rev: f699cb48c7f379f97623f1f244b0b6c5875d7497)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>