The runpy module is used to implement 'python3 -m foo', so move it to
python3-core as it's an essential part of the CLI.
(From OE-Core rev: eba857d3e52f83d426e95fa8373799da058f9484)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>