TBR: lib/discovery/test: disable TestDirectoryRoaming
TBR: lib/discovery/test: disable TestDirectoryRoaming

https://github.com/vanadium/build/issues/83

Change-Id: I375ae87b3211c61242589f6f42034df0a140fc9f

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