[platform][IX7] Modify get_reboot_cause in chassis.py for test_reboot in testbed

Author: roberthong-qct

platform/broadcom/sonic-platform-modules-quanta/ix7-32x/sonic_platform/chassis.py

@@ -221,7 +221,9 @@ def get_reboot_cause(self):
             is "REBOOT_CAUSE_HARDWARE_OTHER", the second string can be used
             to pass a description of the reboot cause.
         """
-        return (ChassisBase.REBOOT_CAUSE_HARDWARE_OTHER, "Invalid Reason")
+        return (ChassisBase.REBOOT_CAUSE_NON_HARDWARE, None)
+        #TODO: Add Hardware and watchdog reboot cause
+        #return (ChassisBase.REBOOT_CAUSE_HARDWARE_OTHER, "Invalid Reason")
 
     ##############################################
     # Other methods