Replace resource.txt with resource.robot

Change-Id: I4d2afd35645880e33a31644cd717bbeae55666f0
Signed-off-by: Sandhya Somashekar <sansomas@in.ibm.com>
diff --git a/lib/xcat/xcat_utils.robot b/lib/xcat/xcat_utils.robot
index 7eaadfa..4e3fd3c 100644
--- a/lib/xcat/xcat_utils.robot
+++ b/lib/xcat/xcat_utils.robot
@@ -1,7 +1,7 @@
 *** Settings ***
 
-Resource    ../xcat/resource.txt
-Resource    ../../lib/resource.txt
+Resource    ../xcat/resource.robot
+Resource    ../../lib/resource.robot
 
 Library     SSHLibrary
 Library     OperatingSystem