branch-util: Fix branch-util-tryjob for testing.

branch-util has lots of special handling, which was broken for
branch-util-tryjob. Add the new config to the special case handling.

BUG=chromium:784985
TEST=cros tryjob --cbuildbot branch-util-tryjob --branch-name test_branch --version 10127.0.0

Change-Id: I718437dc85d5bead0530f0eef3b0bc1239cec7e6
Reviewed-on: https://chromium-review.googlesource.com/815675
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>
4 files changed