Add check_patch.py and related libraries to autotest-client-tests

This should help reviewing new patches. The code is based on virt-test
check_patch and the links to github were changed.

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>
Merge pull request #18 from ldoktor/framework2

Add check_patch.py and related libraries to autotest-client-tests