Comment 10 for bug 1574610

[Impact]
python-vmware-nsx lacks the required alembic db migrations; installations will lack any vmware nsx specific db tables.

[Test Case]
sudo apt-get install python-vmware-nsx neutron-server
<configure nsx driver in neutron configuration>
neutron-db-manage upgrade head
<succeeds>
sudo service neutron-server restart
<fails with log messages inline with the original bug report>

[Regression Potential]
Minimal; cherry picked fix for master branch to ensure that alembic migrations are installed even when not using a sdist generated tarball.