Fix minor typo in ns_lib.resource

Change-Id: I1e72982a677285cdd5caf16ec42cec5fee7326a7
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/robot-systest/lib/ns_lib.resource b/robot-systest/lib/ns_lib.resource
index ab763e1..9b2cc6f 100644
--- a/robot-systest/lib/ns_lib.resource
+++ b/robot-systest/lib/ns_lib.resource
@@ -170,8 +170,8 @@
     Should Not Be Empty   ${ns_id}
     ${rc}   ${stdout}=   Run And Return Rc And Output   osm vnf-list --ns ${ns_id} | grep ${ns_id} | awk '{print $2}' 2>&1
     Should Be Equal As Integers   ${rc}   ${SUCCESS_RETURN_CODE}   msg=${stdout}   values=False
-    @{vdur}=   Split String   ${stdout}
-    RETURN   @{vdur}
+    @{vnfr}=   Split String   ${stdout}
+    RETURN   @{vnfr}
 
 Get Vnf Vdur Names
     [Documentation]   Return a list with the names of the VDU records of a VNF instance.