:bug: 修复 BUG.webflux 匹配fallback 全部方法

pigx-gateway/src/main/java/com/pig4cloud/pigx/gateway/config/RouterFunctionConfiguration.java

@@ -45,7 +45,7 @@ public class RouterFunctionConfiguration {
 	@Bean
 	public RouterFunction routerFunction() {
 		return RouterFunctions.route(
-			RequestPredicates.GET("/fallback")
+			RequestPredicates.path("/fallback")
 				.and(RequestPredicates.accept(MediaType.TEXT_PLAIN)), hystrixFallbackHandler)
 			.andRoute(RequestPredicates.GET("/code")
 				.and(RequestPredicates.accept(MediaType.TEXT_PLAIN)), imageCodeHandler)

pigx-gateway/src/main/java/com/pig4cloud/pigx/gateway/filter/PreviewGatewayFilter.java

@@ -29,7 +29,7 @@ import org.springframework.stereotype.Component;
 
 /**
  * @author lengleng
- * @date 2018/8/421
+ * @date 2018/8/21
  * 演示环境过滤处理
  */
 @Slf4j