Change Disk Client API Version for Azure Stack

The standard 2020-06-01 API Version is not supported for disk
operations in Azure Stack, so change to the compatible 2018-06-01
profile.

Author: patrickdillon

azure/defaults.go

@@ -116,6 +116,10 @@ const (
 	// StackAPIVersion is the API version profile to set for ARM clients. See:
 	// https://learn.microsoft.com/en-us/azure-stack/user/azure-stack-profiles-azure-resource-manager-versions?view=azs-2408#overview-of-the-2020-09-01-hybrid-profile
 	StackAPIVersionProfile = "2020-06-01"
+
+	// StackDiskAPIVersionProfile is the API Version to set for the disk client.
+	// API Version Profile "2020-06-01" is not supported for disks.
+	StackDiskAPIVersionProfile = "2018-06-01"
 )
 
 var (

azure/services/disks/client.go

@@ -18,6 +18,7 @@ package disks
 
 import (
 	"context"
+	"strings"
 	"time"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore/runtime"
@@ -38,6 +39,9 @@ type azureClient struct {
 // newClient creates a new disks client from an authorizer.
 func newClient(auth azure.Authorizer, apiCallTimeout time.Duration) (*azureClient, error) {
 	opts, err := azure.ARMClientOptions(auth.CloudEnvironment(), auth.BaseURI())
+	if strings.EqualFold(auth.CloudEnvironment(), azure.StackCloudName) {
+		opts.APIVersion = azure.StackDiskAPIVersionProfile
+	}
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create disks client options")
 	}