Find any CI variables from `env` which has a prefix. If there are any
such CI variables, strip prefix from variable name then create a generic
Kubernetes secret containing all these CI variables as key-value pairs.

Also, Pass in secretname to application container

The secretname may be present, if nil, the chart does nothing. If
present, the chart will load the key-value pairs from the secret into
the application container. See
https://gitlab.com/charts/auto-deploy-app/blob/master/README.md#configuration