Update travis settings
Update travis settings

`sudo: false` is now the default on Travis CI - https://changelog.travis-ci.com/linux-builds-run-on-vms-by-default-77106
dropwizard/dropwizard,pkwarren/dropwizard,jplock/dropwizard,pkwarren/dropwizard,dropwizard/dropwizard,micsta/dropwizard,phambryan/dropwizard,jplock/dropwizard,Alexey1Gavrilov/dropwizard,nickbabcock/dropwizard,phambryan/dropwizard,nickbabcock/dropwizard,mosoft521/dropwizard,mosoft521/dropwizard,pkwarren/dropwizard,Alexey1Gavrilov/dropwizard,nickbabcock/dropwizard,micsta/dropwizard,mosoft521/dropwizard,phambryan/dropwizard,micsta/dropwizard,jplock/dropwizard,dropwizard/dropwizard,Alexey1Gavrilov/dropwizard