add config to admin_cmd_list

Author: wuxianrong

conf/pika.conf

@@ -47,7 +47,7 @@ slow-cmd-list :
 # List of commands considered as administrative. These commands will be handled by the admin thread pool. Modify this list as needed.
 # Default commands: info, ping, monitor
 # This parameter is only supported by the CONFIG GET command and not by CONFIG SET.
-admin-cmd-list : info, ping, monitor, auth
+admin-cmd-list : info, ping, monitor, auth, config
 
 # The number of threads to write DB in slaveNode when replicating.
 # It's preferable to set slave's sync-thread-num value close to master's thread-pool-size.