Roll swarming at f4a7c026d0baa677b1f83bacb3f716693df6dda6.
Roll swarming at f4a7c026d0baa677b1f83bacb3f716693df6dda6.

Includes improved auth for Cloud Endpoints API and a fix for
@auth.endpoints_api accessing datastore during module loading time.

TBR=maruel@chromium.org
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/751693002

nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra