Merge pull request #60623 from feiskyer/vmtype

Automatic merge from submit-queue (batch tested with PRs 60623, 60625, 60520). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Set default vmtype to standard if not set

**What this PR does / why we need it**:

When using IMDS, kubelet reports Failed to extract vmssVMName even when vmtype is not set:

```
E0301 05:30:57.515306    3124 azure_vmss_cache.go:52] Failed to extract vmssVMName "77890k8s9010"
E0301 05:30:57.515306    3124 kubelet_node_status.go:79] Unable to construct v1.Node object for kubelet: failed to get external ID from cloud provider: not a vmss instance
```

azure cloud provider shouldn't call vmss logic in this case. It should assume stardard vmtype if it is not set.


**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 #60622

**Special notes for your reviewer**:

**Release note**:

```release-note
Set Azure vmType to standard if it is not set in azure cloud config.
```

pkg/cloudprovider/providers/azure/azure.go

@@ -160,6 +160,11 @@ func NewCloud(configReader io.Reader) (cloudprovider.Interface, error) {
 		return nil, err
 	}
 
+	if config.VMType == "" {
+		// default to standard vmType if not set.
+		config.VMType = vmTypeStandard
+	}
+
 	env, err := auth.ParseAzureEnvironment(config.Cloud)
 	if err != nil {
 		return nil, err

pkg/cloudprovider/providers/azure/azure_test.go

@@ -864,6 +864,7 @@ func getTestCloud() (az *Cloud) {
 			RouteTableName:               "rt",
 			PrimaryAvailabilitySetName:   "as",
 			MaximumLoadBalancerRuleCount: 250,
+			VMType: vmTypeStandard,
 		},
 	}
 	az.DisksClient = newFakeDisksClient()