anchor.diff:  ...
         volumes: <3>
         - configMap:
  +          defaultMode: 0755 <4>
             name: customrouter
           name: config-volume
   ...
  
positive.code: $ oc volume dc/ipf-ha-router --add --overwrite \
      --name=config-volume \
      --mount-path=/etc/keepalive \
      --source='{"configMap": { "name": "mycustomcheck"}}'
  ----
  +
  .. Editing the *ipf-ha-router* deployment configuration:
  
negative.code: ----
  
  . There are two approaches to adding the script to the pod: use `oc` commands or
  edit the deployment configuration. In both cases the defaultMode for the mounted
  configMap files must allow execution.  A value of 0755 (493 decimal) is typical.
  
  .. Using `oc` commands:
  +
  