Fixed missing parameter when using ipmi user list

-When execute inband command ipmi user list
it will return 'IPMI command failed: Unknown (0x82)'.
Because it missing a parameter <channel number>.
User Commands:
list         [<channel number>]

Signed-off-by: Tony Lee <tony.lee@quantatw.com>
Change-Id: Ie5778166b11379f4e9def233628f0caa9b52ec8e
diff --git a/redfish/account_service/test_ipmi_redfish_user.robot b/redfish/account_service/test_ipmi_redfish_user.robot
index 9877744..4e4138e 100644
--- a/redfish/account_service/test_ipmi_redfish_user.robot
+++ b/redfish/account_service/test_ipmi_redfish_user.robot
@@ -81,7 +81,7 @@
     Redfish.Patch  /redfish/v1/AccountService/Accounts/${random_username}  body=&{payload}
 
     # Verify new user privilege level via IPMI.
-    ${resp}=  Run IPMI Standard Command  user list
+    ${resp}=  Run IPMI Standard Command  user list ${CHANNEL_NUMBER}
 
     # Example of response data:
     # ID  Name             Callin  Link Auth  IPMI Msg   Channel Priv Limit