CFBMC-6884：当电源线被移除时，AFF A70“系统控制器环境显示”将 PSU 报告为“良好”

问题描述

从 PSU 中移除电源线显示环境状态为“良好”。示例： 
::> event log show
Time Node    Severity Event
---- --------- -------- ---------------------------
...  node_name NOTICE   monitor.chassisPowerSupply.degraded: Chassis power supply 1 is degraded: PSU1 In Curr is Unreadable
...  node_name NOTICE   monitor.chassisPowerSupply.degraded: Chassis power supply 1 is degraded: PSU1 In Volt is Unreadable
::> system controller environment show
Node     FRU Name State    
---------  -------- -----
node_name  PSU2 FRU GOOD
node_name  PSU1 FRU GOOD
...