GitLab

Switching from my own invented bike to a library function for
credentials and config files.

BUG=815158
TEST=manual

Change-Id: I32db516219a7db17d8b0dd7a3ed0f15c8430389f
Reviewed-on: https://chromium-review.googlesource.com/974108Reviewed-by: Lutz Justen <ljusten@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Roman Sorokin <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547734}