[Build] Fix so that openjdk7 is still built on Travis.
[Build] Fix so that openjdk7 is still built on Travis.

paoloambrosio/cucumber-jvm,DPUkyle/cucumber-jvm,paoloambrosio/cucumber-jvm,paoloambrosio/cucumber-jvm,cucumber/cucumber-jvm,cucumber/cucumber-jvm,cucumber/cucumber-jvm,cucumber/cucumber-jvm,paoloambrosio/cucumber-jvm,DPUkyle/cucumber-jvm,DPUkyle/cucumber-jvm,DPUkyle/cucumber-jvm,cucumber/cucumber-jvm,DPUkyle/cucumber-jvm,DPUkyle/cucumber-jvm