Repository: kubernetes-sigs/cluster-api-provider-vsphere (go)

Issue:
CAPV created resources should have the CAPI cluster-name label
/kind feature

**Describe the solution you'd like**
CAPI's topology controller guarantees that all resources realized by the controller pertaining to the cluster will have the `cluster.x-k8s.io/cluster-name` label. Any resources created by the providers might or might not follow the convention. CAPI does not define any label contract on these created resources.
To track the object to cluster association, CAPV should ensure any resource it creates can be tracked to a cluster object.

**Anything else you would like to add:**
A list of CAPV CRs to augment and verify:
- [ ] VSphereVM
- [x] IPAddressClaim

**Environment:**

- Cluster-api-provider-vsphere version: 
- Kubernetes version: (use `kubectl version`): 
- OS (e.g. from `/etc/os-release`): 

Pull request description:
🌱 Ensure vm-operator VM has CAPI cluster-name label
<!--  Thanks for sending a pull request! Please add a icon to the title of this PR (see https://sigs.k8s.io/cluster-api-provider-vsphere/CONTRIBUTING.md#contributing-a-patch), and delete this line and similar ones -->
<!-- the icon will be either ⚠️ (:warning:, major or breaking changes), ✨ (:sparkles:, feature additions), 🐛 (:bug:, patch and bugfixes), 📖 (:book:, documentation or proposals), or 🌱 (:seedling:, minor or other)
Here are some other tips for you:
1. If this is your first time, read our contributor guidelines https://git.k8s.io/community/contributors/guide/pull-requests.md#the-pull-request-submit-process and developer guide https://git.k8s.io/community/contributors/devel/development.md#development-guide
2. If you want *faster* PR reviews, read how: https://git.k8s.io/community/contributors/guide/pull-requests.md#best-practices-for-faster-reviews
3. Follow the instructions for writing a release note: https://git.k8s.io/community/contributors/guide/release-notes.md
4. If the PR is unfinished, see how to mark it: https://git.k8s.io/community/contributors/guide/pull-requests.md#marking-unfinished-pull-requests
5. If this PR changes image versions, please title this PR "Bump <image name> from x.x.x to y.y.y."
-->

**What this PR does / why we need it**:
This is to ensure CAPV created resources should have the CAPI cluster-name label. VSphereVM already has it like [here](https://github.com/kubernetes-sigs/cluster-api-provider-vsphere/blob/main/pkg/services/vimmachine.go#L316), so just add it for vm-operator VM in this PR.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #2218


Patch:
diff --git a/pkg/services/vmoperator/vmopmachine.go b/pkg/services/vmoperator/vmopmachine.go
index a4ac9415..53213501 100644
--- a/pkg/services/vmoperator/vmopmachine.go
+++ b/pkg/services/vmoperator/vmopmachine.go
@@ -594,6 +594,10 @@ func getVMLabels(supervisorMachineCtx *vmware.SupervisorMachineContext, vmLabels
 		vmLabels[k] = v
 	}
 
+	// Ensure the VM has a label that can be used when searching for
+	// resources associated with the target cluster.
+	vmLabels[clusterv1.ClusterNameLabel] = supervisorMachineCtx.GetClusterContext().Cluster.Name
+
 	return vmLabels
 }
 


Test patch:
diff --git a/pkg/services/vmoperator/vmopmachine_test.go b/pkg/services/vmoperator/vmopmachine_test.go
index 6562a086..558707df 100644
--- a/pkg/services/vmoperator/vmopmachine_test.go
+++ b/pkg/services/vmoperator/vmopmachine_test.go
@@ -71,6 +71,7 @@ const (
 	vmIP                     = "127.0.0.1"
 	biosUUID                 = "test-biosUuid"
 	missingK8SVersionFailure = "missing kubernetes version"
+	clusterNameLabel         = clusterv1.ClusterNameLabel
 )
 
 var _ = Describe("VirtualMachine tests", func() {
@@ -148,6 +149,7 @@ var _ = Describe("VirtualMachine tests", func() {
 				Expect(vmopVM.ObjectMeta.Annotations[ClusterModuleNameAnnotationKey]).To(Equal(ControlPlaneVMClusterModuleGroupName))
 				Expect(vmopVM.ObjectMeta.Annotations[ProviderTagsAnnotationKey]).To(Equal(ControlPlaneVMVMAntiAffinityTagValue))
 
+				Expect(vmopVM.Labels[clusterNameLabel]).To(Equal(clusterName))
 				Expect(vmopVM.Labels[clusterSelectorKey]).To(Equal(clusterName))
 				Expect(vmopVM.Labels[nodeSelectorKey]).To(Equal(roleControlPlane))
 				// for backward compatibility, will be removed in the future