DMTF Update 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: Ie9c06a79137399190469ff3a071d2d90c93c8e07
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/dmtf_tools/Redfish_Reference_Checker.robot b/redfish/dmtf_tools/Redfish_Reference_Checker.robot
index 92f2c3b..1fcef8f 100644
--- a/redfish/dmtf_tools/Redfish_Reference_Checker.robot
+++ b/redfish/dmtf_tools/Redfish_Reference_Checker.robot
@@ -30,7 +30,7 @@
 
     # Work complete, total failures:  0
     Should Match Regexp    ${output}  Work complete, total failures:[ ]+0
-    Run Keyword If  ${rc} != 0  Fail  Redfish-Reference-Checker Failed.
+    IF  ${rc} != 0  Fail  Redfish-Reference-Checker Failed.
 
 *** Keywords ***