Change function params into const references

include/MySQL_HostGroups_Manager.h

@@ -1092,7 +1092,7 @@ class MySQL_HostGroups_Manager {
 	void set_server_current_latency_us(char *hostname, int port, unsigned int _current_latency_us);
 	unsigned long long Get_Memory_Stats();
 
-	void add_discovered_servers_to_mysql_servers_and_replication_hostgroups(vector<tuple<string, int, int>>& new_servers);
+	void add_discovered_servers_to_mysql_servers_and_replication_hostgroups(const vector<tuple<string, int, int>>& new_servers);
 
 	void update_group_replication_set_offline(char *_hostname, int _port, int _writer_hostgroup, char *error);
 	void update_group_replication_set_read_only(char *_hostname, int _port, int _writer_hostgroup, char *error);

lib/MySQL_HostGroups_Manager.cpp

@@ -8591,7 +8591,9 @@ MySQLServers_SslParams * MySQL_HostGroups_Manager::get_Server_SSL_Params(char *h
 * We then rebuild the 'mysql_servers' table as well as the internal 'hostname_hostgroup_mapping'.
 * @param new_servers A vector of tuples where each tuple contains the values needed to add each new server.
 */
-void MySQL_HostGroups_Manager::add_discovered_servers_to_mysql_servers_and_replication_hostgroups(vector<tuple<string, int, int>>& new_servers) {
+void MySQL_HostGroups_Manager::add_discovered_servers_to_mysql_servers_and_replication_hostgroups(
+	const vector<tuple<string, int, int>>& new_servers
+) {
 	int added_new_server;
 	wrlock();