Added environment variables to save JAVA_HOME settings for jdk8 and jdk9.
Changed environment variable name JAVA_HOME8 to JAVA8_HOME in openjdk8-build recipe.
Changed environment variable name JAVA_HOME7 to JAVA7_HOME in openjdk8-build recipe.
Merge branch 'openjdk9-recipe' of github.com:neomatrix369/openjdk-chef-build into openjdk9-recipe