These tests don't get ran often (as demonstrated by the fact that some were not
ported to Python 3), so move them to oeqa/selftest so they get executed
frequently and can be extended easily.
[ YOCTO #7376 ]
(From OE-Core rev: 2001979ad41e6fdd5a37b0f90a96708f39c9df07)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>