changing fhirUserPassword should cause the server pods to restart

[lmsurpre]

I updated the fhirUserPassword in my values override and then used that to helm upgrade.
To my surprise, this didn't cause the pods to restart. I guess its because we only restart when the normal configMap gets updated, not just a random secret.

That is accomplished via this pattern:

      annotations:
        checksum/config: {{ include (print $.Template.BasePath "/configMap.yaml") . | sha256sum }}

We should add fhir-user-secret to that list.