util/election: log acquisition of mastership (#1437)
util/election: log acquisition of mastership (#1437)


AlCutter/trillian,daviddrysdale/trillian,RJPercival/trillian,Martin2112/trillian,gdbelvin/trillian,daviddrysdale/trillian,AlCutter/trillian,daviddrysdale/trillian,Martin2112/trillian,google/trillian,RJPercival/trillian,gdbelvin/trillian,google/trillian,gdbelvin/trillian,Martin2112/trillian