Need to modify scala build to install toree from apache's dist server and not pypi

[lbustelo]

The pypi project for Toree has been removed. Apache does not want any packages made available outside of Apache sanctions servers.

[lbustelo]

See https://github.com/apache/incubator-toree/blob/0.1.x/Makefile#L179 for how to install from dist server.

[rgbkrk]

That is so strange of Apache, that's how Python packages are consumed.

[lbustelo]

Apache is a very strict community with many rules and procedures that I fear will suffer from how fast innovation takes place elsewhere. If it wasn't for big data projects...