Switch from oraclejdk7 to openjdk7
Switch from oraclejdk7 to openjdk7

https://github.com/travis-ci/travis-ci/issues/7964#issuecomment-316769421:
"oraclejdk7 is unfortunately no longer available in Trusty after our latest updates, since we can no longer support oraclejdk7 on our recent build images due to Oracle's withdrawal. See: http://www.webupd8.org/2017/06/why-oracle-java-7-and-6-installers-no.html

If this is an option for you, I'd recommend switching to jdk: openjdk7, which is available in the new Trusty images."

valfirst/jbehave-junit-runner,codecentric/jbehave-junit-runner