Resolve "Transition all BB values to Secret objects parsed by `HelmRelease`"

Summary

• Removes all inline HelmRelease values and replaces with {{ .Release.Name }}-<package>-values secret loaded via valuesFrom
  • These values are loaded before the values passthroughs so they get overridden by any customer defined values
  • the secret creation is handled by a named template values-secret
• refactors all customer overlay values into the same secret with bb defaults but using a different overlays key
• introduces common values that are set in the values-secret named template that all charts can use (currently empty)
• Refactors haproxy-sso helmrelease into it's own file (instead of with the authservice namespace.yaml)
• ensure istiooperator components are tied to .Values.istiooperator.enabled (instead of .Values.istio.enabled)

Closes #223 (closed)

chart/templates/_helpers.tpl

@@ -86,4 +86,18 @@ app.kubernetes.io/instance: "{{ .Release.Name }}"
 app.kubernetes.io/version: "{{ .Chart.Version }}"
 app.kubernetes.io/part-of: "bigbang"
 app.kubernetes.io/managed-by: "flux"
-{{- end -}}
\ No newline at end of file
+{{- end -}}
+
+{{- define "values-secret" -}}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ .root.Release.Name }}-{{ .name }}-values
+  namespace: {{ .root.Release.Namespace }}
+type: generic
+stringData:
+  common: |
+  defaults: {{- toYaml .defaults | nindent 4 }}
+  overlays: |
+    {{- toYaml .package.values | nindent 4 }}
+{{- end -}}