This py35 job against neutron intends on installing ovsdbapp from
master/source but fails beacuse it was trying to install neutron from
source via its requirements.ts but neutron doesn't depend on itself.
We can fix this by explicitly setting the project to be installed from
master to ovsdbapp.
Change-Id: I01c1659c2ab642919d9104ce04c9b3a882b1fa28