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>
(cherry picked from commit 178263c26da66538203e47a28a102097a7cf2929)
Reviewed-on: https://chromium-review.googlesource.com/478051
Reviewed-by: Jinsong Mu <jinsong@google.com>
Tested-by: Keith Haddow <haddowk@chromium.org>
3 files changed
