helm: standardize yaml configuration (#15728)

- move application variables under `mastodon` namespace
- restore standard yaml structure for ingress configuration
- move values.yaml.template to values.yaml

chart/templates/deployment-sidekiq.yaml

@@ -33,7 +33,7 @@ spec:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
       # ensure we run on the same node as the other rails components; only
       # required when using PVCs that are ReadWriteOnce
-      {{- if or (eq "ReadWriteOnce" .Values.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.persistence.system.accessMode) }}
+      {{- if or (eq "ReadWriteOnce" .Values.mastodon.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.mastodon.persistence.system.accessMode) }}
       affinity:
         podAffinity:
           requiredDuringSchedulingIgnoredDuringExecution:
@@ -63,7 +63,7 @@ spec:
             - exec
             - sidekiq
             - -c
-            - {{ .Values.application.sidekiq.concurrency | quote }}
+            - {{ .Values.mastodon.sidekiq.concurrency | quote }}
           envFrom:
             - configMapRef:
                 name: {{ include "mastodon.fullname" . }}-env