helm: Check EndpointCRD is enabled when CiliumEndpointSlice is enable…

…d too

This commit adds a supplementary check during the deployment to prevent
installing Cilium with incompatibles flags enableCiliumEndpointSlice=true
disableEndpointCRD=true.

Signed-off-by: Donia Chaiehloudj <donia.cld@isovalent.com>

install/kubernetes/cilium/templates/validate.yaml

@@ -69,3 +69,10 @@
     {{ fail "SPIRE installation requires .Values.auth.mTLS.enabled=true and .Values.auth.mTLS.spire.enabled=true" }}
   {{- end }}
 {{- end }}
+
+{{/* validate Cilium operator */}}
+{{- if eq .Values.enableCiliumEndpointSlice true }}
+  {{- if eq .Values.disableEndpointCRD true }}
+    {{ fail "if Cilium Endpoint Slice is enabled (.Values.enableCiliumEndpointSlice=true), it requires .Values.disableEndpointCRD=false" }}
+  {{- end }}
+{{- end }}