Merge pull request #296 in G/fastr from...

Merge pull request #296 in G/fastr from ~LUKAS.STADLER_ORACLE.COM/fastr:feature/update_jdk to master

* commit '496c3d09':
  update to new jdk version

ci.hocon

 java7 : {name : oraclejdk, version : "7",    platformspecific: true}
 #java8 : {name : oraclejdk, version : "8u66", platformspecific: true}
-java8 : {name : labsjdk, version : "8u92-jvmci-0.19", platformspecific: true}
+java8 : {name : labsjdk, version : "8u92-jvmci-0.20", platformspecific: true}
 
 common : {
   packages : {