clustermsi: use a case-insentitive check for resource ID

ARM resource IDs are case-insensitive, so the check here needs to be,
as well.

Signed-off-by: Steve Kuznetsov <[email protected]>

Author: stevekuznetsov

pkg/cluster/clustermsi.go

@@ -132,7 +132,7 @@ func (m *manager) initializeClusterMsiClients(ctx context.Context) error {
 
 	var azureCred azcore.TokenCredential
 	for _, identity := range kvSecret.ExplicitIdentities {
-		if identity != nil && identity.ResourceID != nil && *identity.ResourceID == msiResourceId.String() {
+		if identity != nil && identity.ResourceID != nil && strings.EqualFold(*identity.ResourceID, msiResourceId.String()) {
 			var err error
 			azureCred, err = dataplane.GetCredential(cloud, *identity)
 			if err != nil {