python: Replace distutils.utils.split_quotes with shlex.split

python: Replace distutils.utils.split_quotes with shlex.split

distutils is deprecated and may be removed in python 3.12.
Use shlex.split which has been around since python 2.3.

shlex.split does not split on all the ASCII control characters that
split_quoted will[1], but for edk2 usage I don't think that matters.

[1] https://stackoverflow.com/questions/54999301/what-is-the-difference-between-distutils-util-split-quoted-and-shlex-split

Signed-off-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>