/data/data/azure/main.tf: Change blob type from block to page.

It seems to be necessary for VHD image files that they have the Azure blob container type 'page' instead of 'block'. That's required for the Azure OKD installer to work.

data/data/azure/main.tf

@@ -170,7 +170,7 @@ resource "azurerm_storage_blob" "rhcos_image" {
   name                   = "rhcos${random_string.storage_suffix.result}.vhd"
   storage_account_name   = azurerm_storage_account.cluster.name
   storage_container_name = azurerm_storage_container.vhd.name
-  type                   = "Block"
+  type                   = "Page"
   source_uri             = var.azure_image_url
   metadata               = map("source_uri", var.azure_image_url)
 }