max_edge_returned_per_vertex does not take effect in v2.5.0

[xiaopqr]

Describe the bug (must be provided)

max_edge_returned_per_vertex does not take effect in v2.5.0

Your Environments (must be provided)

• OS: Linux 10-130-166-243.okg-db-graphd.cp01 3.10.0-957.27.2.el7.x86_64 vesoft-inc/nebula-graph#1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Compliler: g++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-36)
• CPU: Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz
• Commit id: Nothing

How To Reproduce(must be provided)

Steps to reproduce the behavior:

1. Step 1:
   UPDATE CONFIGS storage:max_edge_returned_per_vertex=10;
2. Step 2:
   SHOW CONFIGS;
3. Step 3: GO 1 STEPS FROM 59868671 OVER Singer_song; 546 results returned

[bright-starry-sky]

This problem is caused by configuration parameter local_config. let refer to the following doc for setting

https://docs.nebula-graph.io/1.2.1/manual-EN/3.build-develop-and-administration/3.configurations/1.config-persistency-and-priority/

close this one.