[release-1.24] fix: create private endpoint failure when vnetResourceGroup is specified

[andyzhangx]

What type of PR is this?

/kind bug

What this PR does / why we need it:

fix: create private endpoint failure when vnetResourceGroup is specified in azure file storage class

cherrypick of #1528

this PR adds a new parameter vnetResourceGroup into getSubnet func, if vnetResourceGroup is provided, then use it, otherwise use vnetResourceGroup from cloud provider config which keeps the same logic

related config and error msg

  apiVersion: storage.k8s.io/v1
  kind: StorageClass
  metadata:
    name: my-azurefile
  mountOptions:
  - dir_mode=0777
  - file_mode=0777
  - uid=0
  - gid=0
  - mfsymlinks
  - cache=strict
  - actimeo=30
  - nobrl
  parameters:
    networkEndpointType: privateEndpoint
    skuName: Premium_LRS
    subnetName: default
    vnetName: my-vnet  # this is the name of the private vnet created on step 3
    vnetResourceGroup: aks-ds-rg
  provisioner: file.csi.azure.com
  reclaimPolicy: Delete
  volumeBindingMode: Immediate

I0726 13:12:03.775852       1 utils.go:77] GRPC call: /csi.v1.Controller/CreateVolume
 
I0726 13:12:03.775883       1 utils.go:78] GRPC request: {"capacity_range":{"required_bytes":10737418240},"name":"pvc-9ac5081e-1483-4a9c-9915-e21ea222e53d","parameters":{"csi.storage.k8s.io/pv/name":"pvc-9ac5081e-1483-4a9c-9915-e21ea222e53d","csi.storage.k8s.io/pvc/name":"my-azurefile","csi.storage.k8s.io/pvc/namespace":"default","networkEndpointType":"privateEndpoint","skuName":"Premium_LRS","subnetName":"default","vnetName":"my-vnet","vnetResourceGroup":"aks-ds-rg"},"volume_capabilities":[{"AccessType":{"Mount":{"mount_flags":["dir_mode=0777","file_mode=0777","uid=0","gid=0","mfsymlinks","cache=strict","actimeo=30","nobrl"]}},"access_mode":{"mode":5}}]}
 
I0726 13:12:04.313940       1 azure_storageaccount.go:413] azure - no matching account found, begin to create a new account yyy in resource group MC_aks-ds-rg_aks-test_australiacentral, location: australiacentral, accountType: Premium_LRS, accountKind: FileStorage, tags: map[k8s-azure-created-by:azure]
 
I0726 13:12:04.313999       1 azure_storageaccount.go:438] set AllowBlobPublicAccess(false) for storage account(yyy)
 
I0726 13:12:04.313940       1 azure_storageaccount.go:413] azure - no matching account found, begin to create a new account yyy in resource group MC_aks-ds-rg_aks-test_australiacentral, location: australiacentral, accountType: Premium_LRS, accountKind: FileStorage, tags: map[k8s-azure-created-by:azure]
 
I0726 13:12:04.313999       1 azure_storageaccount.go:438] set AllowBlobPublicAccess(false) for storage account(yyy)
 
I0726 13:12:30.176409       1 azure_storageaccount.go:583] Creating private endpoint(yyy-pvtendpoint) for account (yyy)
 
I0726 13:12:30.248922       1 azure_subnetclient.go:135] Received error in subnet.get.request: resourceID: /subscriptions/xxx/resourceGroups/MC_aks-ds-rg_aks-test_australiacentral/providers/Microsoft.Network/virtualNetworks/my-vnet/subnets/default, error: Retriable: false, RetryAfter: 0s, HTTPStatusCode: 404, RawError: {"error":{"code":"ResourceNotFound","message":"The Resource 'Microsoft.Network/virtualNetworks/my-vnet' under resource group 'MC_aks-ds-rg_aks-test_australiacentral' was not found. For more details please go to https://aka.ms/ARMResourceNotFoundFix"}}
 
I0726 13:12:30.249020       1 azure_subnet_repo.go:65] Subnet "default" not found
 
E0726 13:12:30.249040       1 azure_storageaccount.go:590] SubnetPropertiesFormat of (my-vnet, default) is nil
 
I0726 13:12:30.450263       1 azure_armclient.go:302] Received error in sendAsync.send: resourceID: http://localhost:7788/subscriptions/xxx/resourceGroups/aks-ds-rg/providers/Microsoft.Network/virtualNetworks/my-vnet/subnets/default?api-version=2022-07-01, error: Retriable: false, RetryAfter: 0s, HTTPStatusCode: 400, RawError: {
 
  "error": {
 
    "code": "AddressPrefixStringCannotBeNullOrEmpty",
 
    "message": "Address prefix string for resource /subscriptions/xxx/resourceGroups/aks-ds-rg/providers/Microsoft.Network/virtualNetworks/my-vnet/subnets/default cannot be null or empty.",
 
    "details": []
 
  }

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

fix: subnet update issue when vnetResourceGroup is specified in azure file storage class

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

fix: subnet update issue when vnetResourceGroup is specified in azure file storage class

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[andyzhangx]

/retest