cycler: Add prefix regular expression to config

BUG=chromium:1035045
TEST=./generate.py

Change-Id: I17f3d48d17a64d9cee47c5feb826d2c340d6fb23
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2175579
Commit-Queue: George Engelbrecht <engeg@google.com>
Tested-by: George Engelbrecht <engeg@google.com>
Reviewed-by: David Burger <dburger@chromium.org>
Reviewed-by: Sean Abraham <seanabraham@chromium.org>
2 files changed