title: initialDelaySeconds value from configMap
body: <p>I have multiple services and their probes are configured in the same way. I would like to extract common values like initialDelaySeconds, periodSeconds etc for livenessProbe into configMap. Is it possible?</p>
  <p>When I create a configMap like this:</p>
  <pre><code>data:
    liveness-endpoint: /actuator/health/liveness
    liveness-initialDelaySeconds: 60
    liveness-periodSeconds: 5
  </code></pre>
  <p>and try to reference it in probe like this:</p>
  <pre><code>  livenessProbe:
      httpGet:
        path: liveness-endpoint
        port: http-api
      initialDelaySeconds: liveness-initialDelaySeconds
      periodSeconds: liveness-periodSeconds
  </code></pre>
  <p>kubernetes complain, that configMap must have only Strings, so I'm changing it to</p>
  <pre><code>  liveness-initialDelaySeconds: &quot;60&quot;
  </code></pre>
  <p>and then it complains that probe must use Integer, not String.</p>
  <p>As you see, I can reference port for probe, so probably there is a way to define those int values, but how?</p>