Fix multiple keywords with name 'Open Connection' for XCAT.

Change-Id: Ia995201fb9802450f88ea3bd946ef134e3e70d73
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/xcat/xcat_utils.robot b/lib/xcat/xcat_utils.robot
index 032d526..9d2e61d 100644
--- a/lib/xcat/xcat_utils.robot
+++ b/lib/xcat/xcat_utils.robot
@@ -17,7 +17,7 @@
     # xcat_host  IP address of the XCAT server.
     # xcat_port  Network port on which XCAT server accepts ssh session.
 
-    Open Connection  ${xcat_host}  port=${xcat_port}
+    SSHLibrary.Open Connection  ${xcat_host}  port=${xcat_port}
     Login  ${XCAT_USERNAME}  ${XCAT_PASSWORD}