Add placeholder for `update_dns_records`

gso/workflows/l3_core_service/migrate_l3_core_service.py

@@ -368,6 +368,13 @@ def deploy_bgp_session_real(
     }
 
 
+@step("Update Infoblox")
+def update_dns_records(subscription: L3CoreService) -> State:
+    """Update DNS records in Infoblox."""
+    #  TODO: implement
+    return {"subscription": subscription}
+
+
 @step("Update subscription model")
 def update_subscription_model(
     subscription: L3CoreService, destination_edge_port: EdgePort, replaced_ap_index: int
@@ -404,6 +411,7 @@ def migrate_l3_core_service() -> StepList:
         >> lso_interaction(deploy_destination_ep_real)
         >> lso_interaction(deploy_bgp_session_dry)
         >> lso_interaction(deploy_bgp_session_real)
+        >> update_dns_records
         >> update_subscription_model
         >> resync
         >> stop_moodi()