fieldstat增加health check功能的计数

platform/include/global_metrics.h

@@ -49,6 +49,11 @@ struct global_metrics
     uint64_t control_packet_resetall_num; // 累计值
     uint64_t control_packet_error_num;    // 累计值
 
+    uint64_t sf_active_times;      // 累计值
+    uint64_t sf_inactive_times;    // 累计值
+    uint64_t sf_mac_exist_times;   // 累计值
+    uint64_t sf_mac_noexist_times; // 累计值
+
     uint64_t session_nums; // 瞬时值
 
     struct global_metrics_config config;