use app and worker service accounts in role binding

Signed-off-by: Pascal Sthamer <10992664+P4sca1@users.noreply.github.com>

charts/shuffle/templates/shuffle-app/shuffle-app-role-binding.yaml

@@ -8,11 +8,9 @@ metadata:
   {{- if .Values.commonAnnotations }}
   annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
   {{- end }}
-# Deployed shuffle apps will use the default service account. There is currently no way to change that.
-# https://github.com/Shuffle/Shuffle/pull/1421#issuecomment-2382623260
 subjects:
   - kind: ServiceAccount
-    name: default
+    name: {{ include "shuffle.app.serviceAccountName" . }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: Role

charts/shuffle/templates/shuffle-worker/shuffle-worker-role-binding.yaml

@@ -8,11 +8,9 @@ metadata:
   {{- if .Values.commonAnnotations }}
   annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
   {{- end }}
-# Deployed shuffle workers will use the default service account. There is currently no way to change that.
-# https://github.com/Shuffle/Shuffle/pull/1421#issuecomment-2382623260
 subjects:
   - kind: ServiceAccount
-    name: default
+    name: {{ include "shuffle.worker.serviceAccountName" . }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: Role