Sonar Fixes (#2234)

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

hawkbit-rest-core/src/main/java/org/eclipse/hawkbit/rest/json/model/ResponseList.java

@@ -59,7 +59,7 @@ public class ResponseList<T> extends RepresentationModel<ResponseList<T>> implem
     }
 
     @Override
-    public <T> T[] toArray(final T[] a) {
+    public <C> C[] toArray(final C[] a) {
         return content.toArray(a);
     }