Most ptests run on on riscv64 but for some reason python3 hangs. Move
it to the problem list until this is resolved so we can establish a
"known to work" baseline.
(was still going after 42000s, long after everything else finished)
(From OE-Core rev: adc448b19e80f6343050f4c527acc63a161c88ca)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>