Redfish Network robot codes with latest directives

Changes:
   - Run KeyWord If is deprecated since Robot
     Framework version 5.*, use 'IF' instead

Tested:
   - Checked using robot dry-run to make sure the
     syntax is not broken
Change-Id: Ibe1bbbd4603c0e8348fa0408132e41a165ae0154
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/managers/test_lldp_config.robot b/redfish/managers/test_lldp_config.robot
index 5e8ffb7..adfb42f 100644
--- a/redfish/managers/test_lldp_config.robot
+++ b/redfish/managers/test_lldp_config.robot
@@ -65,5 +65,6 @@
     ${resp}=  Redfish.Get  ${REDFISH_LLDP_ETH_IFACE}${ethernet_interface}
     ${lldp_state_expected}=  Get From Dictionary  ${resp.dict}  Ethernet
 
-    Run Keyword If  '${lldp_state}' != '${lldp_state_expected['LLDPEnabled']}'
-    ...  Fail  msg=LLDP value is not set correctly.
+    IF  '${lldp_state}' != '${lldp_state_expected['LLDPEnabled']}'
+        Fail  msg=LLDP value is not set correctly.
+    END