Rename arguments for clarity and ensure correct usage

Author: ciroque

internal/certification/certificates.go

@@ -176,7 +176,7 @@ func (c *Certificates) handleDeleteEvent(obj interface{}) {
 	logrus.Debugf("Certificates::handleDeleteEvent: certificates (%d)", len(c.Certificates))
 }
 
-func (c *Certificates) handleUpdateEvent(oldValue interface{}, newValue interface{}) {
+func (c *Certificates) handleUpdateEvent(_ interface{}, newValue interface{}) {
 	logrus.Debug("Certificates::handleUpdateEvent")
 
 	secret, ok := newValue.(*corev1.Secret)

internal/configuration/settings.go

@@ -266,10 +266,10 @@ func (s *Settings) handleDeleteEvent(obj interface{}) {
 	}
 }
 
-func (s *Settings) handleUpdateEvent(_ interface{}, obj interface{}) {
+func (s *Settings) handleUpdateEvent(_ interface{}, newValue interface{}) {
 	logrus.Debug("Settings::handleUpdateEvent")
 
-	configMap, yes := isOurConfig(obj)
+	configMap, yes := isOurConfig(newValue)
 	if !yes {
 		return
 	}