rename defaultFinalizer to finalizer in logs and docs

Author: Soroosh Sarabadani

operator-framework/src/main/java/io/javaoperatorsdk/operator/api/ResourceController.java

@@ -6,7 +6,7 @@ public interface ResourceController<R extends CustomResource> {
 
     /**
      * The implementation should delete the associated component(s). Note that this is method is called when an object
-     * is marked for deletion. After its executed the default finalizer is automatically removed by the framework;
+     * is marked for deletion. After its executed the custom resource finalizer is automatically removed by the framework;
      * unless the return value is false - note that this is almost never the case.
      * Its important to have the implementation also idempotent, in the current implementation to cover all edge cases
      * actually will be executed mostly twice.

operator-framework/src/main/java/io/javaoperatorsdk/operator/processing/EventDispatcher.java

@@ -60,7 +60,7 @@ public void handleEvent(CustomResourceEvent event) {
             cleanup(resource);
         } else {
             if (!ControllerUtils.hasGivenFinalizer(resource, resourceFinalizer) && !markedForDeletion(resource)) {
-                /*  We always add the default finalizer if missing and not marked for deletion.
+                /*  We always add a finalizer if missing and not marked for deletion.
                     We execute the controller processing only for processing the event sent as a results
                     of the finalizer add. This will make sure that the resources are not created before
                     there is a finalizer.
@@ -131,7 +131,7 @@ private void replace(CustomResource resource) {
 
     private void addFinalizerIfNotPresent(CustomResource resource) {
         if (!ControllerUtils.hasGivenFinalizer(resource, resourceFinalizer) && !markedForDeletion(resource)) {
-            log.info("Adding default finalizer to {}", resource.getMetadata());
+            log.info("Adding finalizer {} to {}", resourceFinalizer, resource.getMetadata());
             if (resource.getMetadata().getFinalizers() == null) {
                 resource.getMetadata().setFinalizers(new ArrayList<>(1));
             }