Add openjdk-8-jdk to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1706
Add openjdk-8-jdk to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1706

Packages: openjdk-8-jdk openjdk-8-jre-headless openjdk-8-jre openjdk-8-demo openjdk-8-source openjdk-8-doc openjdk-8-dbg openjdk-8-jre-jamvm openjdk-8-jre-zero

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist