bump 3dt
bump 3dt

disable keep alive connections
https://github.com/dcos/3dt/pull/69

xinxian0458/dcos,dcos/dcos,branden/dcos,jeid64/dcos,kensipe/dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/dcos,mnaboka/dcos,surdy/dcos,lingmann/dcos,GoelDeepak/dcos,mesosphere-mergebot/dcos,branden/dcos,surdy/dcos,mesosphere-mergebot/dcos,mnaboka/dcos,mnaboka/dcos,mellenburg/dcos,darkonie/dcos,amitaekbote/dcos,jeid64/dcos,darkonie/dcos,amitaekbote/dcos,lingmann/dcos,vishnu2kmohan/dcos,lingmann/dcos,mesosphere-mergebot/dcos,mesosphere-mergebot/mergebot-test-dcos,darkonie/dcos,darkonie/dcos,kensipe/dcos,mnaboka/dcos,branden/dcos,asridharan/dcos,amitaekbote/dcos,asridharan/dcos,lingmann/dcos,amitaekbote/dcos,dcos/dcos,mesosphere-mergebot/mergebot-test-dcos,jeid64/dcos,BenWhitehead/dcos,vishnu2kmohan/dcos,GoelDeepak/dcos,dcos/dcos,surdy/dcos,mellenburg/dcos,BenWhitehead/dcos,xinxian0458/dcos,mellenburg/dcos,GoelDeepak/dcos,xinxian0458/dcos,vishnu2kmohan/dcos,kensipe/dcos,dcos/dcos,xinxian0458/dcos,surdy/dcos,mellenburg/dcos,mesosphere-mergebot/mergebot-test-dcos,mnaboka/dcos,asridharan/dcos,asridharan/dcos,branden/dcos,BenWhitehead/dcos,darkonie/dcos,kensipe/dcos,jeid64/dcos,GoelDeepak/dcos,BenWhitehead/dcos,vishnu2kmohan/dcos,dcos/dcos