If you want to Develop for ODTN you should first get ONOS 2.0. Please follow the instructions in the following link to setup development environment for ONOS:
checkout branch 2.0
ONOS_APPS
$:~ git checkout origin/onos-2.0
Before launching ONOS please export these apps:
ONOS_APPS
$:~ ONOS_APPS=odtn-service
Then you can follow one of these guides to setup a phase 1.0 demo as a base: