Python 3.10.0 contains:
9e09849d20 ("bpo-41006: importlib.util no longer imports typing (GH-20938)")

It causes importlib.util to no longer import importlib.abs, which leads
to the following error when trying to use kunit with qemu:
AttributeError: module 'importlib' has no attribute 'abc'. Did you mean: '_abc'?

Add the missing import.
Signed-off-by: NMichał Winiarski <michal.winiarski@intel.com>
Reviewed-by: NDaniel Latypov <dlatypov@google.com>
Reviewed-by: NBrendan Higgins <brendanhiggins@google.com>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>