infra: attempt to resolve #4316 by jdk upgrade
infra: attempt to resolve #4316 by jdk upgrade

Base on knowledge of https://github.com/travis-ci/travis-ci/issues/4042
jonmbake/checkstyle,jochenvdv/checkstyle,romani/checkstyle,sabaka/checkstyle,romani/checkstyle,jochenvdv/checkstyle,sharang108/checkstyle,liscju/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,ilanKeshet/checkstyle,ilanKeshet/checkstyle,jochenvdv/checkstyle,sharang108/checkstyle,romani/checkstyle,checkstyle/checkstyle,jonmbake/checkstyle,sharang108/checkstyle,ilanKeshet/checkstyle,rnveach/checkstyle,rnveach/checkstyle,jonmbake/checkstyle,checkstyle/checkstyle,sabaka/checkstyle,sabaka/checkstyle,romani/checkstyle,liscju/checkstyle,rnveach/checkstyle,rnveach/checkstyle,romani/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,liscju/checkstyle,checkstyle/checkstyle