Change GUI and GUI2 to be apps rather than core features

Change-Id: I862e5bdbccc29fd78716159e168e7a14bc5053e1
diff --git a/tools/test/cells/beast-3 b/tools/test/cells/beast-3
index fc39f70..d736da7 100644
--- a/tools/test/cells/beast-3
+++ b/tools/test/cells/beast-3
@@ -14,4 +14,4 @@
 # IP address of Mininet
 export OCN=10.192.19.69
 
-export ONOS_APPS="drivers,null,intentperf"
+export ONOS_APPS="gui,drivers,null,intentperf"