Fix to MXS-356: https://mariadb.atlassian.net/browse/MXS-356

Added configurable timeouts for the embedded MySQL connections.

server/include/maxconfig.h

@@ -106,6 +106,9 @@ typedef struct {
 	unsigned int		pollsleep;		/**< Wait time in blocking polls */
         int syslog; /*< Log to syslog */
         int maxlog; /*< Log to MaxScale's own logs */
+        unsigned int auth_conn_timeout; /*< Connection timeout for the user authentication */
+        unsigned int auth_read_timeout; /*< Read timeout for the user authentication */
+        unsigned int auth_write_timeout; /*<  Write timeout for the user authentication */
 } GATEWAY_CONF;
 
 extern int		config_load(char *);