Add seeOther shortcut to ServerResponse.BodyBuilder

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/DefaultServerResponseBuilderTests.java

@@ -105,6 +105,17 @@ public class DefaultServerResponseBuilderTests {
 
 	}
 
+	@Test
+	public void seeOther() throws Exception {
+		URI location = URI.create("http://example.com");
+		Mono<ServerResponse> result = ServerResponse.seeOther(location).build();
+		StepVerifier.create(result)
+				.expectNextMatches(response -> HttpStatus.SEE_OTHER.equals(response.statusCode()) &&
+						location.equals(response.headers().getLocation()))
+				.expectComplete()
+				.verify();
+	}
+
 	@Test
 	public void temporaryRedirect() throws Exception {
 		URI location = URI.create("http://example.com");