Fix inventory power supply object name

Old path:
"/xyz/openbmc_project/inventory/system/chassis/power_supply0"
"/xyz/openbmc_project/inventory/system/chassis/power_supply1"

New path:
"/xyz/openbmc_project/inventory/system/chassis/powersupply0"
"/xyz/openbmc_project/inventory/system/chassis/powersupply1"

Change-Id: Ib5f482a06d39d00bfad41f4ec2fa741ed6c05e7b
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/test_inventory.robot b/tests/test_inventory.robot
index 4b9be44..50cc60a 100644
--- a/tests/test_inventory.robot
+++ b/tests/test_inventory.robot
@@ -368,11 +368,11 @@
     [Documentation]  Verify minimal power supply inventory.
     [Tags]  Verify_Minimal_Power_Supply_Inventory
     # Example:
-    # "/xyz/openbmc_project/inventory/system/chassis/power_supply0",
-    # "/xyz/openbmc_project/inventory/system/chassis/power_supply1",
+    # "/xyz/openbmc_project/inventory/system/chassis/powersupply0",
+    # "/xyz/openbmc_project/inventory/system/chassis/powersupply1",
 
     # item         minimum_count
-    power_supply   1
+    powersupply    1
     [Template]     Minimum Inventory