Fetch patches over ssh, not http.

ssh:// is a helluva lot more tested/trusted, plus we're seeing
occasional 503's out of http; thus use ssh.

Note that this change implicitly blocks people who lack gerrit
accounts from using cbuildbot; previously anonymous would've
worked (or should've).

BUG=chromium-os:33239
TEST=unittests updated, manual run.

Change-Id: I3285c301b70e36bd84e52044523f12cc992a5eaf
Reviewed-on: https://gerrit.chromium.org/gerrit/29180
Commit-Ready: Brian Harring <ferringb@chromium.org>
Tested-by: Brian Harring <ferringb@chromium.org>
Reviewed-by: David James <davidjames@chromium.org>
2 files changed