Support for Annotation Templating

[dfulgham]

https://github.com/flowforge/helm/blob/f0d1a5cf531c76aba316d221b07ddda9bd47ed1a/helm/flowforge/templates/service-ingress.yaml#L18C40-L18C40

RE: FlowFuse/driver-k8s#95

Need to support the annotation replacement for serviceName, instanceURL, instanceHost, and instancePort if they exist. (i.e. {{ serviceName }} )

@hardillb

[hardillb]

Might have a way

{{- if .Values.ingress.annotations }}
  annotations:
    {{- range $keys, $values := .Values.ingress.annotations }}
    {{ $keys }}: {{ $values | replace "{{ serviceName }}" .Values.forge.entryPoint  }}
    {{- end }}
  {{- end }}

[dfulgham]

@hardillb Im using this now in our deployment (v 1.10.1 ) working well. I have to manually change service to https and tls unfortunately for editor nodes, but that will get fixed once the tls PR is merged. FlowFuse/driver-k8s#94

One thing that should be added to the docs, is the requirement for space between the "{{" and the variable name, I made the mistake of trying {{serviceName}} (no spaces) and that fails.

Also don't know if this is a side effect, but I can no longer add the annotation

nginx.ingress.kubernetes.io/force-ssl-redirect: 'true'

It fails with a go unmarshalling error related to the boolean string and fails to deploy

[hardillb]

@dfulgham Can you open a new issue for the new problem and supply a sample values.yml file that shows the problem please.