feat: expose ingressClassName to values

kubernetes/helm/openslice/templates/openslice-ingress.yaml

@@ -10,7 +10,7 @@ metadata:
     {{- toYaml .Values.ingress.annotations | nindent 4 }}
   name: {{ include "openslice.fullname" . }}-openslice-ingress
 spec:
-  ingressClassName: nginx
+  ingressClassName: {{ .Values.ingress.ingressClassName | quote }}
   rules:
     - http:
         paths:

kubernetes/helm/openslice/values.yaml

@@ -190,6 +190,7 @@ service:
   port: 80
 
 ingress:
+  ingressClassName: nginx
   paths:
   - path: "/tmf-api"
     service: "osscapi"