veyron/lib/testutil/integration: don't expect MT_ADDR in StartRootMT
veyron/lib/testutil/integration: don't expect MT_ADDR in StartRootMT

Change-Id: If761b8d8a512d96c73847c333756940815c9fa27

vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref