Ability to change network setting for an existing provisioning scheme

Using this feature, you can now change the network setting for an existing Provisioning Scheme so that the new VMs are created on the new subnetwork. Use the parameter `-NetworkMapping` in the `Set-ProvScheme` command to change the network setting. Only the newly provisioned VMs from the scheme will have the new subnetwork settings. You must also make sure that the subnetworks are under the same hosting unit. Existing VMs in the catalog are not affected by the change. For more information, see Change the network setting for an existing provisioning scheme.