Extended bucket 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: I64ed8f89d176144468ed580683b0f5d1ed2fcd37
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/extended/obmc_boot_test_resource.robot b/extended/obmc_boot_test_resource.robot
index a4715db..64ac5f3 100644
--- a/extended/obmc_boot_test_resource.robot
+++ b/extended/obmc_boot_test_resource.robot
@@ -95,7 +95,8 @@
     # rename the "OBMC Boot Test Py" python function to "OBMC Boot Test" and
     # do away with this robot keyword.
 
-    Run Keyword If  '${pos_arg1}' != '${EMPTY}'
-    ...  Set To Dictionary  ${arguments}  loc_boot_stack=${pos_arg1}
+    IF  '${pos_arg1}' != '${EMPTY}'
+        Set To Dictionary  ${arguments}  loc_boot_stack=${pos_arg1}
+    END
 
     OBMC Boot Test Py  &{arguments}