Add beltino factory to cbuildbot_config.py

This will enable beltino factory builder.
BUG=chromium:308400
TEST=./cbuildbot_commands_unittest.py

Change-Id: I98475a22e4d023a16b4521330ecff621a4869449
Reviewed-on: https://chromium-review.googlesource.com/173443
Commit-Queue: Bowgo Tsai <bowgotsai@chromium.org>
Tested-by: Bowgo Tsai <bowgotsai@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/buildbot/cbuildbot_config.py b/buildbot/cbuildbot_config.py
index 51c0fad..b117832 100755
--- a/buildbot/cbuildbot_config.py
+++ b/buildbot/cbuildbot_config.py
@@ -1621,6 +1621,10 @@
 _AddFirmwareConfigs()
 
 
+_factory_release.add_config('beltino-factory',
+  boards=['beltino'],
+)
+
 _factory_release.add_config('falco-factory',
   boards=['falco'],
 )