Add a python check to verify.

At times python can be missing, have GLIBC errors or not be able to
import particular built ins. By adding this check we stop verify from
passing and clean up failing.

BUG=chromium-os:39510,chromium-os:36079,chromium-os:39212
TEST=Ran on a machine missing python, with a GLIBC issue, and a cPickle
import error.

Change-Id: Ifdd4cf1321850c081fa9686e4a659a647c8c7cd2
Reviewed-on: https://gerrit.chromium.org/gerrit/44548
Tested-by: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
1 file changed