Configure a temporary directory with Undertow

See gh-17778

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServerFactory.java

@@ -259,6 +259,7 @@ public class UndertowServletWebServerFactory extends AbstractServletWebServerFac
 		deployment.setClassLoader(getServletClassLoader());
 		deployment.setContextPath(getContextPath());
 		deployment.setDisplayName(getDisplayName());
+		deployment.setTempDir(new File(System.getProperty("java.io.tmpdir")));
 		deployment.setDeploymentName("spring-boot");
 		if (isRegisterDefaultServlet()) {
 			deployment.addServlet(Servlets.servlet("default", DefaultServlet.class));