metrics: Add C-Ray performance test

This PR adds C-Ray performance test in order to be part of the kata
metrics CI.

Fixes #7375

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

tests/metrics/disk/c-ray/cray.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+#
+# Copyright (c) 2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+set -e
+
+# General env
+SCRIPT_PATH=$(dirname "$(readlink -f "$0")")
+source "${SCRIPT_PATH}/../../lib/common.bash"
+
+TEST_NAME="cray"
+IMAGE="docker.io/library/cray:latest"
+DOCKERFILE="${SCRIPT_PATH}/Dockerfile"
+CMD="cd c-ray-1.1 && ./c-ray-mt -t 32 -s 1024x768 -r 8 -i sphfract -o output.ppm 2>&1 | tee -a output.txt && cat output.txt"
+cray_file=$(mktemp crayresults.XXXXXXXXXX)
+
+function remove_tmp_file() {
+	rm -rf "${cray_file}"
+}
+
+trap remove_tmp_file EXIT
+
+function main() {
+	# Check tools/commands dependencies
+	cmds=("awk" "docker")
+	init_env
+	check_cmds "${cmds[@]}"
+	check_ctr_images "$IMAGE" "$DOCKERFILE"
+
+	sudo -E "${CTR_EXE}" run --rm --runtime="${CTR_RUNTIME}" "${IMAGE}" test sh -c "${CMD}" > "${cray_file}"
+	metrics_json_init
+	results=$(cat "${cray_file}" | grep seconds | awk '{print $3}' | head -n 1)
+	metrics_json_start_array
+
+	local json="$(cat << EOF
+	{
+		"rendering": {
+			"Result": ${results},
+			"Units": "s"
+		}
+	}
+EOF
+)"
+	metrics_json_add_array_element "$json"
+	metrics_json_end_array "Results"
+	metrics_json_save
+
+	clean_env_ctr
+}
+
+main "$@"