[testing] marking down all jackson related tests as j8+ only

The jackson dep we need for testing is too new a class file to run on j6, stubbing it out too much effort.
Odds we find a bug specifically because this stuff fails on java6/7 are low, and I'm okay with supporting
6/7 a little less well.

test/transform/resource/before/SuperBuilderBasicToBuilder.java

@@ -15,7 +15,7 @@ public class SuperBuilderBasicToBuilder {
 		private int method() {
 			return 2;
 		}
-
+		
 		private static String staticMethod(Parent instance) {
 			return "staticMethod";
 		}