travis: run CT integration tests too (#632)
travis: run CT integration tests too (#632)


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