cros_generate_test_payload.py: start devserver in non-sudo mode

Starting the devserver in sudo excludes the path to chromite binaries. devserver
doesn't need to be run as sudo specially for the purpose of generating payloads.

BUG=chromium:860072
TEST=betty-chrome-pfq-tryjob

Change-Id: Iccf114cb5cede766bb64a9c66b68834152fb9a9a
Reviewed-on: https://chromium-review.googlesource.com/1174952
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed