brillo_aue2e_test_setup.py: Delegate Moblab temp directory creation.

BUG=b:25395612
TEST=Script still runs

Change-Id: I8ae4994531229c44cfde6493a2ac9b633a828f23
Reviewed-on: https://chromium-review.googlesource.com/310551
Commit-Ready: Gilad Arnold <garnold@chromium.org>
Tested-by: Gilad Arnold <garnold@chromium.org>
Reviewed-by: Simran Basi <sbasi@chromium.org>
1 file changed