java client's long polling timeout is 90 seconds, so server side long polling...

java client's long polling timeout is 90 seconds, so server side long polling timeout must be less than 90 (#2630)

apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/config/BizConfig.java

@@ -61,7 +61,8 @@ public class BizConfig extends RefreshableConfig {
 
   public long longPollingTimeoutInMilli() {
     int timeout = getIntProperty("long.polling.timeout", DEFAULT_LONG_POLLING_TIMEOUT);
-    return 1000 * checkInt(timeout, 1, Integer.MAX_VALUE, DEFAULT_LONG_POLLING_TIMEOUT);
+    // java client's long polling timeout is 90 seconds, so server side long polling timeout must be less than 90
+    return 1000 * checkInt(timeout, 1, 90, DEFAULT_LONG_POLLING_TIMEOUT);
   }
 
   public int itemKeyLengthLimit() {