Add RememberMeConfigurer set domain

Fixes gh-3408

web/src/main/java/org/springframework/security/web/authentication/rememberme/AbstractRememberMeServices.java

@@ -50,6 +50,7 @@ import org.springframework.util.StringUtils;
  *
  * @author Luke Taylor
  * @author Rob Winch
+ * @author Eddú Meléndez
  * @since 2.0
  */
 public abstract class AbstractRememberMeServices implements RememberMeServices,
@@ -75,6 +76,7 @@ public abstract class AbstractRememberMeServices implements RememberMeServices,
 	private AuthenticationDetailsSource<HttpServletRequest, ?> authenticationDetailsSource = new WebAuthenticationDetailsSource();
 
 	private String cookieName = SPRING_SECURITY_REMEMBER_ME_COOKIE_KEY;
+	private String cookieDomain;
 	private String parameter = DEFAULT_PARAMETER;
 	private boolean alwaysRemember;
 	private String key;
@@ -385,7 +387,9 @@ public abstract class AbstractRememberMeServices implements RememberMeServices,
 		Cookie cookie = new Cookie(cookieName, cookieValue);
 		cookie.setMaxAge(maxAge);
 		cookie.setPath(getCookiePath(request));
-
+		if (cookieDomain != null) {
+			cookie.setDomain(cookieDomain);
+		}
 		if (maxAge < 1) {
 			cookie.setVersion(1);
 		}
@@ -430,6 +434,11 @@ public abstract class AbstractRememberMeServices implements RememberMeServices,
 		this.cookieName = cookieName;
 	}
 
+	public void setCookieDomain(String cookieDomain) {
+		Assert.hasLength(cookieDomain, "Cookie domain cannot be empty or null");
+		this.cookieDomain = cookieDomain;
+	}
+
 	protected String getCookieName() {
 		return cookieName;
 	}

web/src/test/java/org/springframework/security/web/authentication/rememberme/AbstractRememberMeServicesTests.java

@@ -420,6 +420,21 @@ public class AbstractRememberMeServicesTests {
 		assertThat(cookie.getVersion()).isEqualTo(0);
 	}
 
+	@Test
+	public void setCookieDomainValue() {
+		MockRememberMeServices services = new MockRememberMeServices();
+		MockHttpServletRequest request = new MockHttpServletRequest();
+		MockHttpServletResponse response = new MockHttpServletResponse();
+
+		services.setCookieName("mycookiename");
+		services.setCookieDomain("spring.io");
+		services.setCookie(new String[] { "mycookie" }, 1000, request, response);
+		Cookie cookie = response.getCookie("mycookiename");
+
+		assertThat(cookie).isNotNull();
+		assertThat(cookie.getDomain()).isEqualTo("spring.io");
+	}
+
 	private Cookie[] createLoginCookie(String cookieToken) {
 		MockRememberMeServices services = new MockRememberMeServices(uds);
 		Cookie cookie = new Cookie(