Chain up to superclass tearDown in ServerActionsTest
Chain up to superclass tearDown in ServerActionsTest

I noticed that HostTestCase was failing if run on its own because
allow_admin_api wasn't set - it worked fine when the full suite was
run because the flag was being leaked from ServerActionsTest.

Change-Id: I9072f84f017125536d1f261165c44413964f5708

n0ano/gantt,n0ano/gantt