Add a configmap checksum to the helm chart deployment

[eklesel]

In order to ensure that Kubernetes pods restart when the configmap is updated, we need to add an annotation to the pod template with the checksum of the configmap. Therefore, when the configmap changes, the pod template annotation also changes, and the deployment is updated.

Also included is a package for 1.1.0 and an update to the index.yaml, done by running helm package ping-exporter and helm repo index . respectively.

[czerwonk]

Thanks for contributing! :)