add sonarqube namespace labels

chart/templates/sonarqube/namespace.yaml

@@ -3,4 +3,9 @@ apiVersion: v1
 kind: Namespace
 metadata:
   name: sonarqube
+  labels:
+    app.kubernetes.io/name: sonarqube
+    app.kubernetes.io/component: "developer-tools"
+    {{- include "commonLabels" . | nindent 4}}
+    istio-injection: disabled
 {{- end }}