stability: Add kubernetes parallel test

This PR adds a kubernetes parallel test that will launch multiple replicas
from a kubernetes deployment and we will iterate this multiple times to
verify that we are able to do this using CoCo Kata. This test will be
part of the CoCo Kata stability CI.

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

tests/stability/kubernetes_soak_test.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+# Copyright (c) 2024 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+SCRIPT_PATH=$(dirname "$(readlink -f "$0")")
+source "${SCRIPT_PATH}/../metrics/lib/common.bash"
+
+set -x
+
+replicas="${replicas:-8}"
+deployment_name="${deployment_name:-deploymenttest}"
+# How many times will we run the test loop...
+iterations="${iterations:-20}"
+
+function delete_deployment() {
+	kubectl delete deployment "${deployment_name}"
+}
+
+function go() {
+	kubectl scale deployment/"${deployment_name}" --replicas="${replicas}"
+	cmd="kubectl get deployment/${deployment_name} -o yaml | grep 'availableReplicas: ${replicas}'"
+	waitForProcess "300" "30" "${cmd}"
+}
+
+function init() {
+	kubectl create -f "${SCRIPT_PATH}/runtimeclass_workloads/pod-deployment.yaml"
+	kubectl wait --for=condition=Available --timeout=30s deployment/"${deployment_name}"
+}
+
+function main() {
+	check_processes
+	local i=0
+	for (( i=1; i<="${iterations}"; i++ )); do
+		info "Start iteration $i of $iterations"
+		init
+		#spin them up
+		go
+		#shut them all down
+		delete_deployment
+	done
+}
+
+main "$@"

tests/stability/runtimeclass_workloads/pod-deployment.yaml

@@ -0,0 +1,25 @@
+#
+# Copyright (c) 2024 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploymenttest
+spec:
+  selector:
+    matchLabels:
+      purpose: pod-test
+  replicas: 2
+  template:
+    metadata:
+      labels:
+        purpose: pod-test
+    spec:
+      terminationGracePeriodSeconds: 0
+      runtimeClassName: kata
+      containers:
+      - name: pod-test
+        image: quay.io/prometheus/busybox:latest
+        command: ["tail", "-f", "/dev/null"]