tree dd4521337a63c3f52ddb49b0910225856f9e4889
parent 1691f8efcd62305a1012dd6f37a305260ce51c39
author xixuan <xixuan@chromium.org> 1490199025 -0700
committer chrome-bot <chrome-bot@chromium.org> 1490833031 -0700

devserver: pass a cache_user to initialize gsutil.

This CL passes an argument cache_user in gsutil initialization. This
'cache_user' is used to create cache directory for gsutil.

BUG=chromium:698304
TEST=emerge chromite to local moblab DUT, call devserver to provision
it. Ran cros flash ssh://.

Change-Id: Ia5789ce18ac4d87e74ccf4f0bb9db7ec535cdccf
Reviewed-on: https://chromium-review.googlesource.com/457861
Commit-Ready: Xixuan Wu <xixuan@chromium.org>
Tested-by: Xixuan Wu <xixuan@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>