Extend ONOS+P4 VM scripts to build tutorial VM

With Lubuntu desktop and P4-enabled code editors

Change-Id: I0c287c1d039da5f227d43994340b20a01ffc2617
diff --git a/tools/dev/p4vm/export-ova.sh b/tools/dev/p4vm/export-ova.sh
index 757f94b..32e1694 100755
--- a/tools/dev/p4vm/export-ova.sh
+++ b/tools/dev/p4vm/export-ova.sh
@@ -2,6 +2,8 @@
 
 set -xe
 
+VM_TYPE=${P4_VM_TYPE:-dev}
+
 # Remove references to the existing vagrant-built VM (if any).
 # We want to build a new one from scratch, not start an existing one.
 rm -rf .vagrant/
@@ -24,5 +26,5 @@
 # Remove vagrant shared folder
 vboxmanage sharedfolder remove ${VB_UUID} -name "vagrant"
 
-rm -rf onos-p4-dev.ova
-vboxmanage export ${VB_UUID} -o onos-p4-dev.ova
+rm -rf onos-p4-${VM_TYPE}.ova
+vboxmanage export ${VB_UUID} -o onos-p4-${VM_TYPE}.ova