Purge error log in suite setup

We don't want additional property created in the inventory listing.
Example:
/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply0/fault

While parsing the property, this causes test to fail since it is not
a FRU property by nature but a callout for the module in the system.

Resolves   openbmc/openbmc-test-automation#1420

Change-Id: Idc9b75287ad7f1f1dd7f797ea2b023b4b1fc6178
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/test_inventory.robot b/tests/test_inventory.robot
index 60895ba..dfda300 100644
--- a/tests/test_inventory.robot
+++ b/tests/test_inventory.robot
@@ -515,6 +515,7 @@
 
     Smart Power Off
     REST Power On
+    Delete All Error Logs
 
 Get Inventory
     [Documentation]  Get the properties of an endpoint.