Address PR feedback on multicast discovery service.
Address PR feedback on multicast discovery service.

grybmadsci/openhtf,ShaperTools/openhtf,fahhem/openhtf,fahhem/openhtf,amyxchen/openhtf,ShaperTools/openhtf,google/openhtf,jettisonjoe/openhtf,grybmadsci/openhtf,google/openhtf,jettisonjoe/openhtf,google/openhtf,jettisonjoe/openhtf,fahhem/openhtf,ShaperTools/openhtf,jettisonjoe/openhtf,fahhem/openhtf,google/openhtf,ShaperTools/openhtf,amyxchen/openhtf,grybmadsci/openhtf,grybmadsci/openhtf,ShaperTools/openhtf