fix test fixtures

Author: s-soroosh

operator-framework/src/test/resources/compile-fixtures/ControllerImplemented2InterfacesExpected.java

@@ -2,6 +2,7 @@
 
 import io.fabric8.kubernetes.api.builder.Function;
 import io.fabric8.kubernetes.client.CustomResourceDoneable;
+import java.lang.SuppressWarnings;
 
 public class MyCustomResourceDoneable extends CustomResourceDoneable<ControllerImplemented2Interfaces.MyCustomResource> {
     @SuppressWarnings("unchecked")

operator-framework/src/test/resources/compile-fixtures/ControllerImplementedIntermediateAbstractClassExpected.java

@@ -2,6 +2,7 @@
 
 import io.fabric8.kubernetes.api.builder.Function;
 import io.fabric8.kubernetes.client.CustomResourceDoneable;
+import java.lang.SuppressWarnings;
 
 public class MyCustomResourceDoneable extends CustomResourceDoneable<AbstractController.MyCustomResource> {
     @SuppressWarnings("unchecked")

operator-framework/src/test/resources/compile-fixtures/MultilevelControllerExpected.java

@@ -2,6 +2,7 @@
 
 import io.fabric8.kubernetes.api.builder.Function;
 import io.fabric8.kubernetes.client.CustomResourceDoneable;
+import java.lang.SuppressWarnings;
 
 public class MyCustomResourceDoneable extends CustomResourceDoneable<MultilevelController.MyCustomResource> {
     @SuppressWarnings("unchecked")