GUI2 added in the layout topo overlay

Change-Id: I9960f95ae726a5af9950771ed67bcfc9d172e267
diff --git a/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/panel/toolbar/toolbar.component.ts b/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/panel/toolbar/toolbar.component.ts
index 0615530..ce7b90b 100644
--- a/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/panel/toolbar/toolbar.component.ts
+++ b/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/panel/toolbar/toolbar.component.ts
@@ -39,6 +39,8 @@
 export const CANCEL_TRAFFIC = 'cancel-traffic';
 export const ALL_TRAFFIC = 'all-traffic';
 export const QUICKHELP_BTN = 'quickhelp-btn';
+export const LAYOUT_DEFAULT_BTN = 'layout-default-btn';
+export const LAYOUT_ACCESS_BTN = 'layout-access-btn';
 
 
 /*