Code changes to run a test scenario described in https://github.com/kata-containers/tests/pull/5297

diff.patch

diff --git a/.ci/run.sh b/.ci/run.sh
index 2a0869da..9016d4b3 100755
--- a/.ci/run.sh
+++ b/.ci/run.sh
@@ -39,12 +39,12 @@ case "${CI_JOB}" in
 		sudo -E PATH="$PATH" CRI_RUNTIME="containerd" bash -c "make qat"
 		;;
 	"CRI_CONTAINERD"|"CRI_CONTAINERD_K8S"|"CRI_CONTAINERD_K8S_DEVMAPPER"|"CC_CRI_CONTAINERD"|"CC_CRI_CONTAINERD_CLOUD_HYPERVISOR")
-		echo "INFO: Running stability test"
-		sudo -E PATH="$PATH" CRI_RUNTIME="containerd" bash -c "make stability"
-		echo "INFO: Containerd checks"
-		sudo -E PATH="$PATH" bash -c "make cri-containerd"
-		echo "INFO: Running nydus test"
-		sudo -E PATH="$PATH" CRI_RUNTIME="containerd" bash -c "make nydus"
+		#echo "INFO: Running stability test"
+		#sudo -E PATH="$PATH" CRI_RUNTIME="containerd" bash -c "make stability"
+		#echo "INFO: Containerd checks"
+		#sudo -E PATH="$PATH" bash -c "make cri-containerd"
+		#echo "INFO: Running nydus test"
+		#sudo -E PATH="$PATH" CRI_RUNTIME="containerd" bash -c "make nydus"
 		[[ "${CI_JOB}" =~ K8S ]] && \
 			sudo -E PATH="$PATH" CRI_RUNTIME="containerd" bash -c "make kubernetes"
 		echo "INFO: Running vcpus test"
diff --git a/integration/kubernetes/init.sh b/integration/kubernetes/init.sh
index 8a8e15e5..ca7adbfe 100755
--- a/integration/kubernetes/init.sh
+++ b/integration/kubernetes/init.sh
@@ -9,7 +9,6 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-
 SCRIPT_PATH=$(dirname "$(readlink -f "$0")")
 source "${SCRIPT_PATH}/../../.ci/lib.sh"
 source "${SCRIPT_PATH}/../../lib/common.bash"
@@ -135,6 +134,7 @@ cleanup_cni_configuration() {
 #
 configure_network() {
 	local network_plugin_config="${1:-}"
+	local is_first="${2:-}"
 	local issue="https://github.com/kata-containers/tests/issues/4381"
 
 	if [ -z "${network_plugin_config}" ]; then
@@ -146,7 +146,10 @@ configure_network() {
 	fi
 	info "Use configuration file from ${network_plugin_config}"
 	kubectl apply -f "$network_plugin_config"
-
+	flannel_wait_time=10
+	if [ "${is_first}" = "false" ]; then
+		flannel_wait_time=60
+	fi
 	if [ -n "${flannel_version:-}" ]; then
 		# There is an issue hitting some CI jobs due to a bug on CRI-O that
 		# sometimes doesn't realize a new CNI configuration was installed.
@@ -158,7 +161,7 @@ configure_network() {
 		fi
 		local list_pods="kubectl get -n kube-system --selector app=flannel pods"
 		info "Wait for Flannel pods to show up"
-		waitForProcess "60" "10" \
+		waitForProcess "${flannel_wait_time}" "10" \
 			"[ \$($list_pods 2>/dev/null | wc -l) -gt 0 ]"
 		local flannel_p
 		for flannel_p in $($list_pods \
@@ -231,7 +234,11 @@ start_kubernetes() {
 		bash -f "${SCRIPT_PATH}/../../.ci/install_kubernetes.sh"
 	fi
 
+	info "Before installing a cluster"
+	ls -lah /opt/cni/bin
 	sudo -E kubeadm init --config "${kubeadm_config_file}"
+	info "After installing a cluster"
+	ls -lah /opt/cni/bin
 
 	mkdir -p "$HOME/.kube"
 	sudo cp "/etc/kubernetes/admin.conf" "$HOME/.kube/config"
@@ -274,9 +281,14 @@ start_cri_runtime_service() {
 
 	sudo systemctl status "${cri}" --no-pager || \
 		die "Unable to start the ${cri} service"
+	if [ ! -f /opt/cni/bin/flannel ]; then
+		info "Plugin \"flannel\" not found, restoring it from backup"
+		tar xvfz /opt/plugins-backup.tar.gz -C /
+	fi
 }
 
 main() {
+	local is_first="${1:-}"
 	local arch="$("${SCRIPT_PATH}/../../.ci/kata-arch.sh")"
 	local kubernetes_version=$(get_version "externals.kubernetes.version")
 	local cri_runtime_socket=""
@@ -334,7 +346,7 @@ main() {
 	start_kubernetes "${kubernetes_version}" "${cri_runtime_socket}" "${cgroup_driver}"
 
 	info "Configure the cluster network"
-	configure_network "${network_plugin_config}"
+	configure_network "${network_plugin_config}" "${is_first}"
 
 	# we need to ensure a few specific pods ready and running
 	info "Wait for system's pods be ready and running"
diff --git a/integration/kubernetes/run_kubernetes_tests.sh b/integration/kubernetes/run_kubernetes_tests.sh
index b92c6d7d..64f43044 100755
--- a/integration/kubernetes/run_kubernetes_tests.sh
+++ b/integration/kubernetes/run_kubernetes_tests.sh
@@ -125,8 +125,18 @@ fi
 
 pushd "$kubernetes_dir"
 info "Initialize the test environment"
+plugin_dir="/opt/cni/bin"
+if [ ! -f "${plugin_dir}/flannel" ]; then
+	die "Cannot start testing due to lack of plugin \"flannel\""
+fi
+if [ $(ls "${plugin_dir}" | wc -w) -gt 1 ]; then
+	info "Making backup for cni plugins..."
+	tar cvfz /opt/plugins-backup.tar.gz "${plugin_dir}"
+else
+	die "No plugins, but flannel"
+fi
 wait_init_retry="30"
-if ! bash ./init.sh; then
+if ! bash ./init.sh "true"; then
 	info "Environment initialization failed. Clean up and try again."
 	if ! bash ./cleanup_env.sh; then
 		die "Failed on cleanup, it won't retry. Bailing out..."
@@ -138,7 +148,7 @@ if ! bash ./init.sh; then
 	info "Wait ${wait_init_retry} seconds before retry"
 	sleep "${wait_init_retry}"
 	info "Retry to initialize the test environment..."
-	bash ./init.sh
+	bash ./init.sh "false"
 fi
 trap_on_exit