Generate defaults methods on extending jvm6 interfaces

compiler/testData/codegen/java8/compileKotlinAgainstKotlin/jvm8against6/simpleCallWithHierarchy.kt

@@ -0,0 +1,22 @@
+// FILE: 1.kt
+
+interface Test {
+    fun test(): String {
+        return "OK"
+    }
+}
+
+// FILE: 2.kt
+// KOTLIN_CONFIGURATION_FLAGS: +JVM.JVM_8_TARGET
+interface Test2 : Test {
+
+}
+
+
+class TestClass : Test2 {
+
+}
+
+fun box(): String {
+    return TestClass().test()
+}