Switch travis build to go 1.10 (#1202)
Switch travis build to go 1.10 (#1202)


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