Update integration tests to use newly build CentOS 7.3 AMIs
Update integration tests to use newly build CentOS 7.3 AMIs

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