The tests installed by jsonpointer use unittest not pytest, so update
the dependencies.
Use the unittest runner in python3-unittest-automake-output to get the
correct output.
Apply a patch so the test suite doesn't run twice.
(From OE-Core rev: 595086756c6f24762e08cde9f9ed3e1056976d98)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
