[AU] Always update the devserver code when importing it.

If there are dependencies where ToT autotest needs something from ToT
devserver, then one needs to make sure that the devserver code is
updated before importing it.

This is doubly important in the context of the builders, as they seem to
clone the devserver code once, and then never update it.

BUG=None
TEST=Ran a full_release_test.py that I copied from AUTest step.
Devserver code was updated.

Change-Id: Iffd1a2dd3561cd75d3d495460619515e011d3547
(cherry picked from commit 6d717633c73bc7a0bb180144ed1700fb31a36b3b)
Reviewed-on: https://chromium-review.googlesource.com/168553
Reviewed-by: Alex Miller <milleral@chromium.org>
Commit-Queue: Alex Miller <milleral@chromium.org>
Tested-by: Alex Miller <milleral@chromium.org>
1 file changed