Fix JDK 8 x64 Checksum
Fix JDK 8 x64 Checksum

Attribute ['java']['jdk']['8']['x86_64']['checksum']  was set to JRE instead of JDK checksum.
   * JRE Checksum: cc48b4cacfeda1f699b43ea77ddfaa95
   * JDK Checksum: 3f3d7d0cd70bfe0feab382ed4b0e45c0
juliandunn/java,juliandunn/java,juliandunn/java,GannettDigital/chef-java,GannettDigital/chef-java,GannettDigital/chef-java