OS and Case minor change

agent.py

@@ -27,6 +27,7 @@ def human_size(bytes, units=units_map):
 
 class ENV:
     def __init__(self):
+        self.os = psutil.sys.platform
         self.hostname = psutil.os.uname().nodename
         self.cpu_number = psutil.cpu_count(logical=False)
         self.vcpu = psutil.cpu_count()