fix!: remove registerController to use controller config instead

Author: metacosm

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/Operator.java

@@ -44,18 +44,17 @@ public <R extends CustomResource> void register(ResourceController<R> controller
       registerController(controller, configuration.watchAllNamespaces(), retry, targetNamespaces);
     }
   }
-  
-  public <R extends CustomResource> void registerController(
+
+  // currently only used by IntegrationTestSupport but this should also disappear as by default the
+  // controllers should register into the current namespace the client is connected to which should
+  // work as expected for tests, in particular if we want to start testing using random namespace
+  // names
+  <R extends CustomResource> void registerController(
       ResourceController<R> controller, Retry retry, String... targetNamespaces)
       throws OperatorException {
     registerController(controller, false, retry, targetNamespaces);
   }
 
-  public <R extends CustomResource> void registerController(
-      ResourceController<R> controller, String... targetNamespaces) throws OperatorException {
-    registerController(controller, false, null, targetNamespaces);
-  }
-
   @SuppressWarnings("rawtypes")
   private <R extends CustomResource> void registerController(
       ResourceController<R> controller,

samples/pure-java/src/main/java/io/javaoperatorsdk/operator/sample/PureJavaApplicationRunner.java

@@ -10,6 +10,6 @@ public class PureJavaApplicationRunner {
   public static void main(String[] args) {
     KubernetesClient client = new DefaultKubernetesClient();
     Operator operator = new Operator(client, DefaultConfigurationService.instance());
-    operator.registerController(new CustomServiceController(client));
+    operator.register(new CustomServiceController(client));
   }
 }