Fix issue #22124996: VI: Command Request not Active

Just forgot to add the request to the active set.

Also eradicate a bunch of old cruft that has been replaced
by the final APIs, and improve voice interaction test to
sit fully on top of the final APIs and have a test for
command request.

Change-Id: Ieff7a6165ebf2a4c5fb80c1ebd020511a2ae63ee