We no longer run any ssh-accessible Gerrit hosts; depot_tools only
communicates with *.googlesource.com repos, which use https.

R=tandrii@chromium.org

Bug: 365496
Change-Id: Idb7eb33f91aa19aff4247547c4aab560c27e51ba
Reviewed-on: https://chromium-review.googlesource.com/651317Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Aaron Gable <agable@chromium.org>