Removed hardcoded values for error codes in counters in 'monitor_connect_thread' and no longer required include

lib/MySQL_Monitor.cpp

@@ -11,7 +11,6 @@
 #include <mutex>
 #include <thread>
 #include <prometheus/counter.h>
-#include "mysqld_error.h"
 #include "MySQL_Protocol.h"
 #include "MySQL_HostGroups_Manager.h"
 #include "MySQL_Monitor.hpp"
@@ -874,13 +873,12 @@ void * monitor_connect_thread(void *arg) {
 			(strncmp(mmsd->mysql_error_msg,"ProxySQL Error: Access denied for user",strlen("ProxySQL Error: Access denied for user"))==0)
 		) {
 			proxy_error("Server %s:%d is returning \"Access denied\" for monitoring user\n", mmsd->hostname, mmsd->port);
-			MyHGM->p_update_mysql_error_counter(p_mysql_error_type::proxysql, mmsd->hostgroup_id, mmsd->hostname, mmsd->port, ER_ACCESS_DENIED_ERROR);
 		}
 		else if (strncmp(mmsd->mysql_error_msg,"Your password has expired.",strlen("Your password has expired."))==0)
 		{
 			proxy_error("Server %s:%d is returning \"Your password has expired.\" for monitoring user\n", mmsd->hostname, mmsd->port);
-			MyHGM->p_update_mysql_error_counter(p_mysql_error_type::proxysql, mmsd->hostgroup_id, mmsd->hostname, mmsd->port, ER_MUST_CHANGE_PASSWORD_LOGIN);
 		}
+		MyHGM->p_update_mysql_error_counter(p_mysql_error_type::proxysql, mmsd->hostgroup_id, mmsd->hostname, mmsd->port, mysql_errno(mmsd->mysql));
 	} else {
 		connect_success = true;
 	}