Make sure RESULT_DIR exists before writing raw data

Author: askervin

metrics/scaling/k8s_scale_nc.sh

@@ -335,6 +335,7 @@ run() {
 		sleep ${settle_time}
 
 		if [[ ${nc_reqs_per_pod} -ge 1 ]]; then
+			mkdir -p "$RESULT_DIR" 2>/dev/null || true
 			local latency_raw_output="$RESULT_DIR/${TEST_NAME// /-}.t_pods_round_ip_latency_fail_rx.raw"
 			pod_ips=$(kubectl get pods --selector ${LABEL}=${LABELVALUE} -o json | jq -r '.items[].status.podIP')
 			if [[ ${reqs} != $(echo $pod_ips | wc -w) ]]; then