Fix to MXS-438: https://mariadb.atlassian.net/browse/MXS-438

Maxinfo now supports the shutdown command which shuts down a service, monitor
or MaxScale itself and the restart command which restarts a stopped monitor
or service.

server/modules/include/maxinfo.h

@@ -76,7 +76,9 @@ typedef enum
 	MAXOP_EQUAL,
     MAXOP_FLUSH,
     MAXOP_SET,
-    MAXOP_CLEAR
+    MAXOP_CLEAR,
+    MAXOP_SHUTDOWN,
+    MAXOP_RESTART
 } MAXINFO_OPERATOR;
 
 /**
@@ -115,6 +117,8 @@ typedef struct maxinfo_tree {
 #define LT_FLUSH        10
 #define LT_SET          11
 #define LT_CLEAR        12
+#define LT_SHUTDOWN     13
+#define LT_RESTART      14
 
 
 /**