This fixes some testing issues, and I don't think it was intended to
begin with...
Also fixes a bug in the v2 listeners controller that was exposed by this
testing, so the LB will return to ACTIVE status as expected on failure
to create a listener.
Depends-On: I77658cca1aa82240409a91a2d040c105107ff2e2
Change-Id: Ib23a5253acf30b1a820d2d3fba2e60d2f67d321e