add example for EmptyDir volume (#14499)

Signed-off-by: Torsten Walter <mail@torstenwalter.de>

stable/jenkins/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 name: jenkins
 home: https://jenkins.io/
-version: 1.1.23
+version: 1.1.24
 appVersion: lts
 description: Open source continuous integration server. It supports multiple SCM tools
   including CVS, Subversion and Git. It can execute Apache Ant and Apache Maven-based

stable/jenkins/values.yaml

@@ -360,6 +360,9 @@ agent:
   # - type: Secret
   #   secretName: mysecret
   #   mountPath: /var/myapp/mysecret
+  # - type: EmptyDir
+  #   mountPath: "/var/lib/containers"
+  #   memory: false
   nodeSelector: {}
   # Key Value selectors. Ex:
   # jenkins-agent: v1