docker: Disable autotest-0.17 pylint failures

docker-test is dependent on not yet released autotest-0.17. Disable
locally the pylint failures caused by unsupported parts from
autotest-0.16 with proper message to allow Travis CI testing.

Remove this patch when autotest-0.17 is in:
http://ppa.launchpad.net/lmr/autotest/ubuntu

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>