gremlin_python: generate/build/deps before tests

[leifurhauks]

Code generation is triggered by Maven before tests are run; dependencies
(currently aenum, requests) are installed, and the generated package is built
into ${project.build.testOutputDirectory}/Lib, which is added to the
classpath for the tests via the python.home property. Jython tests
import the gremlin_python package instead of importing its modules
directly.

[leifurhauks]

I think this should fix the CI test failures.

On the subject of the python dependencies (aenum and requests), should they be bundled in the jar? aenum has a 3-clause BSD license, and requests uses the ASL.

[leifurhauks]

Also, the generated __version__.py file fails the rat check. I think it needs to be either
a) generated with the license boilerplate
b) excluded from the rat check, or
c) included in the clean configuration.

Please advise.

[okram]

Can you add the license boilerplate?

BTW: Just pulled your patch and building locally now.