node {   id: " "   cluster: " " } static_resources {   clusters {     name: " "     connect_timeout {       nanos: 4     }     hosts {       pipe {       }     }     health_checks {       timeout {         nanos: 4       }       interval {         nanos: 4       }       unhealthy_threshold {       }       healthy_threshold {       }       grpc_health_check {       }     }     tls_context {       common_tls_context {         tls_certificate_sds_secret_configs {           sds_config {             path: ""           }         }       }     }     http2_protocol_options {     }   } }