adding a comment about ResourceUpdaterMatcher customization

Author: shawkins

Diff for: operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/KubernetesDependentResource.java

@@ -190,6 +190,7 @@ protected void addMetadata(boolean forMatch, R actualResource, final R target, P
   }
 
   protected boolean useSSA(Context<P> context) {
+    // SSA by-passes the updateMatcher, since the use has customized don't use SSA
     if (this instanceof ResourceUpdaterMatcher) {
       return false;
     }