storagecommands: fix getSensorMap() error

The CriSensor frame display wrong sensor value due to
GetManagedObjects method call failed in getSensorMap().

Parsing correct path to avoid GetManagedObjects call failed.

Tested on Bletchley.

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: I2fd57d61105f3a6619204be9c93a1db316cb83f7
diff --git a/src/storagecommands.cpp b/src/storagecommands.cpp
index d79c6d4..6cc51e5 100644
--- a/src/storagecommands.cpp
+++ b/src/storagecommands.cpp
@@ -97,8 +97,8 @@
         updateTimeMap[sensorConnection] = now;
 
         auto managedObj = dbus.new_method_call(
-            sensorConnection.c_str(), "/", "org.freedesktop.DBus.ObjectManager",
-            "GetManagedObjects");
+            sensorConnection.c_str(), "/xyz/openbmc_project/sensors",
+            "org.freedesktop.DBus.ObjectManager", "GetManagedObjects");
 
         ManagedObjectSensor managedObjects;
         try