Use LinkedHashMap for CORS configurations in CorsGatewayFilterApplicationListener to preserve insertion order. Fixes GH-3805.

Signed-off-by: Yavor Chamov <[email protected]>

Author: yavor300

spring-cloud-gateway-server/src/main/java/org/springframework/cloud/gateway/filter/cors/CorsGatewayFilterApplicationListener.java

@@ -18,7 +18,6 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;