fix: include kube-vip image in generated caren-images.txt (#940)

**What problem does this PR solve?**:
Noticed that the kube-vip image was missing in the last release. This is
because kube-vip is deployed as a static Pod and not as a Helm chart.

<details>
  <summary>$ make list-images</summary>

  ```
docker.io/nutanix/ntnx-csi-precheck:3.0.0
docker.io/nutanix/ntnx-csi:3.0.0
docker.io/rancher/local-path-provisioner:v0.0.30
ghcr.io/kube-vip/kube-vip:v0.8.3
ghcr.io/nutanix-cloud-native/caren-helm-reg:v0.0.0-dev
ghcr.io/nutanix-cloud-native/cloud-provider-nutanix/controller:v0.4.1

ghcr.io/nutanix-cloud-native/cluster-api-runtime-extensions-nutanix:v0.0.0-dev
public.ecr.aws/ebs-csi-driver/aws-ebs-csi-driver:v1.35.0

public.ecr.aws/eks-distro/kubernetes-csi/external-attacher:v4.7.0-eks-1-31-3

public.ecr.aws/eks-distro/kubernetes-csi/external-provisioner:v5.1.0-eks-1-31-3

public.ecr.aws/eks-distro/kubernetes-csi/external-resizer:v1.12.0-eks-1-31-3

public.ecr.aws/eks-distro/kubernetes-csi/livenessprobe:v2.14.0-eks-1-31-3

public.ecr.aws/eks-distro/kubernetes-csi/node-driver-registrar:v2.12.0-eks-1-31-3
quay.io/calico/apiserver:v3.28.2
quay.io/calico/cni:v3.28.2
quay.io/calico/csi:v3.28.2
quay.io/calico/ctl:v3.28.2
quay.io/calico/kube-controllers:v3.28.2
quay.io/calico/node-driver-registrar:v3.28.2
quay.io/calico/node:v3.28.2
quay.io/calico/pod2daemon-flexvol:v3.28.2
quay.io/calico/typha:v3.28.2
quay.io/cilium/certgen:v0.2.0

quay.io/cilium/cilium-envoy:v1.29.9-1726784081-a90146d13b4cd7d168d573396ccf2b3db5a3b047
quay.io/cilium/cilium:v1.16.2
quay.io/cilium/hubble-relay:v1.16.2
quay.io/cilium/operator-generic:v1.16.2
quay.io/frrouting/frr:9.1.0
quay.io/metallb/controller:v0.14.8
quay.io/metallb/speaker:v0.14.8
quay.io/tigera/operator:v1.34.5
registry.k8s.io/autoscaling/cluster-autoscaler:v1.31.0
registry.k8s.io/nfd/node-feature-discovery:v0.16.4
registry.k8s.io/provider-aws/cloud-controller-manager:v1.27.9
registry.k8s.io/provider-aws/cloud-controller-manager:v1.28.9
registry.k8s.io/provider-aws/cloud-controller-manager:v1.29.6
registry.k8s.io/provider-aws/cloud-controller-manager:v1.30.3
registry.k8s.io/provider-aws/cloud-controller-manager:v1.31.0
registry.k8s.io/sig-storage/csi-attacher:v4.4.3

registry.k8s.io/sig-storage/csi-external-health-monitor-controller:v0.10.0
registry.k8s.io/sig-storage/csi-node-driver-registrar:v2.9.3
registry.k8s.io/sig-storage/csi-provisioner:v3.6.3
registry.k8s.io/sig-storage/csi-resizer:v1.9.3
registry.k8s.io/sig-storage/csi-snapshotter:v3.0.3
registry.k8s.io/sig-storage/livenessprobe:v2.11.0
registry.k8s.io/sig-storage/snapshot-controller:v8.1.0

  ```
</details>

**Which issue(s) this PR fixes**:
Fixes #

**How Has This Been Tested?**:
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Author: dkoshkin

hack/tools/fetch-images/main.go

@@ -4,6 +4,7 @@
 package main
 
 import (
+	"bufio"
 	"bytes"
 	"flag"
 	"fmt"
@@ -38,12 +39,24 @@ type ChartInfo struct {
 	extraImagesFiles []string
 }
 
+type stringSlice []string
+
+func (s *stringSlice) String() string {
+	return strings.Join(*s, ",")
+}
+
+func (s *stringSlice) Set(value string) error {
+	*s = append(*s, value)
+	return nil
+}
+
 func main() {
 	args := os.Args
 	var (
-		chartDirectory     string
-		helmChartConfigMap string
-		carenVersion       string
+		chartDirectory      string
+		helmChartConfigMap  string
+		carenVersion        string
+		additionalYAMLFiles stringSlice
 	)
 	flagSet := flag.NewFlagSet(createImagesCMD, flag.ExitOnError)
 	flagSet.StringVar(&chartDirectory, "chart-directory", "",
@@ -52,6 +65,8 @@ func main() {
 		"path to helm chart configmap for CAREN")
 	flagSet.StringVar(&carenVersion, "caren-version", "",
 		"CAREN version for images override")
+	flagSet.Var(&additionalYAMLFiles, "additional-yaml-files",
+		"additional YAML images to include")
 	err := flagSet.Parse(args[1:])
 	if err != nil {
 		fmt.Println("failed to parse args", err.Error())
@@ -91,6 +106,12 @@ func main() {
 		os.Exit(1)
 	}
 	images = append(images, addonImages...)
+	additionalYAMLImages, err := getImagesFromYAMLFiles(additionalYAMLFiles)
+	if err != nil {
+		fmt.Println("failed to get images from additional YAML files", err.Error())
+		os.Exit(1)
+	}
+	images = append(images, additionalYAMLImages...)
 	slices.Sort(images)
 	images = slices.Compact(images)
 	for _, image := range images {
@@ -350,3 +371,32 @@ func getTemplatedHelmConfigMap(helmChartConfigMap string) (string, error) {
 	}
 	return b.String(), nil
 }
+
+func getImagesFromYAMLFiles(files []string) ([]string, error) {
+	var images []string
+	for _, f := range files {
+		file, err := os.Open(f)
+		if err != nil {
+			return nil, fmt.Errorf("failed to open file %s with %w", f, err)
+		}
+		defer file.Close()
+
+		scanner := bufio.NewScanner(file)
+		for scanner.Scan() {
+			line := scanner.Text()
+			if strings.Contains(line, " image: ") {
+				// Get everything after "image: "
+				image := strings.SplitAfterN(line, "image: ", 2)
+				if len(image) == 2 {
+					images = append(images, strings.TrimSpace(image[1]))
+				}
+			}
+		}
+
+		err = scanner.Err()
+		if err != nil {
+			return nil, fmt.Errorf("failed to scan file %s: %w", f, err)
+		}
+	}
+	return images, nil
+}

make/addons.mk

@@ -90,4 +90,5 @@ list-images:
 	cd hack/tools/fetch-images && go run . \
 	  -chart-directory=$(PWD)/charts/cluster-api-runtime-extensions-nutanix/ \
 	  -helm-chart-configmap=$(PWD)/charts/cluster-api-runtime-extensions-nutanix/templates/helm-config.yaml \
-	  -caren-version=$(CAREN_VERSION)
+	  -caren-version=$(CAREN_VERSION) \
+	  -additional-yaml-files=$(PWD)/charts/cluster-api-runtime-extensions-nutanix/templates/virtual-ip/kube-vip/manifests/kube-vip-configmap.yaml