Use OperationBuilder.addFileAsAttachment in the ServerDeploymentManager and DomainDeploymentManager impls

The ServerDeploymentManager and DomainDeploymentManager interfaces allow users to pass in a File. Currently we immediate convert that File to a FileInputStream and use that IS in the resulting operation. That will force an in-memory copy. Instead, use the OperationBuilder.addFileAsAttachment method introduced in the parent task.