buildbot.tac: revert to old version
buildbot.tac: revert to old version

this got stomped on.

Signed-off-by: Elizabeth Flanagan <86e3219095765dcc0f6f42aef4bd43803a05b796@intel.com>

denny820909/builder,denny820909/builder,denny820909/builder,denny820909/builder