Add wait for network delay

 * drop copypaste of function_override for VMs

Related-Prod: PRODX-00000
Change-Id: Ic5685926ae8dd783d66e3166d75becb191dbe56d
diff --git a/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp0-gtw0.yaml b/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp0-gtw0.yaml
index 5995560..442a71b 100644
--- a/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp0-gtw0.yaml
+++ b/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp0-gtw0.yaml
@@ -64,4 +64,7 @@
     EOF
 
         netplan --debug apply
+
+        # NOTE(vsaienko): give some time to apply changes
+        sleep 15
     }