jenkins: update to 2.568.1 LTS and chart

Change-Id: Ib6b48599a09dee669d77441c12b354240ef257b8
diff --git a/charts/jenkins/templates/jenkins-agent-svc.yaml b/charts/jenkins/templates/jenkins-agent-svc.yaml
index 4440b91..10b936f 100644
--- a/charts/jenkins/templates/jenkins-agent-svc.yaml
+++ b/charts/jenkins/templates/jenkins-agent-svc.yaml
@@ -5,13 +5,7 @@
   name: {{ template "jenkins.fullname" . }}-agent
   namespace: {{ template "jenkins.namespace" . }}
   labels:
-    "app.kubernetes.io/name": '{{ template "jenkins.name" .}}'
-    {{- if .Values.renderHelmLabels }}
-    "helm.sh/chart": "{{ template "jenkins.label" .}}"
-    {{- end }}
-    "app.kubernetes.io/managed-by": "{{ .Release.Service }}"
-    "app.kubernetes.io/instance": "{{ .Release.Name }}"
-    "app.kubernetes.io/component": "{{ .Values.controller.componentName }}"
+    {{- include "jenkins.labels" . | nindent 4 }}
   {{- if .Values.controller.agentListenerServiceAnnotations }}
   annotations:
     {{- toYaml .Values.controller.agentListenerServiceAnnotations | nindent 4 }}