Prevent overlap of link labels in WEB UI

Change-Id: I6e261186abf9ed87a3c55e50d123e423f652aa41
(cherry picked from commit 622700f)
diff --git a/web/gui/src/main/webapp/app/view/topo/topoForce.js b/web/gui/src/main/webapp/app/view/topo/topoForce.js
index 93e8ddc..b3fc5a3 100644
--- a/web/gui/src/main/webapp/app/view/topo/topoForce.js
+++ b/web/gui/src/main/webapp/app/view/topo/topoForce.js
@@ -844,7 +844,7 @@
             transform: function (d) {
                 var lnk = tms.findLinkById(d.key);
                 if (lnk) {
-                    return td3.transformLabel(lnk.position);
+                    return td3.transformLabel(lnk.position, d.key);
                 }
             }
         }