Exclude Test Data from Packaging

[mgrover1]

As was raised in #468 , it would be good to exclude the data files from packaging, which would cut down the space by ~68 mb. If users are interested in using it, they can clone the repo, and access it from there.

[kenkehoe]

Can ARM provide storage directory for our data that we can pull for testing?

[zssherman]

For this, we'll have to see how the ADC folks can store this. Py-ART stores it at a webpage, which then can be downloaded using pooch. @mgrover1 Have you spoke to at all to Giri with regards to this before I reach out?

[zssherman]

If we have the location, I can always change the code over.

[mgrover1]

We can move ahead with this!

[zssherman]

@mgrover1 Where is the data going to be stored? Trying to think of how or where to pull it from

[kenkehoe]

ARM is going through some FTP security changes. I wonder if we had a second GitHub repo of just data files we could avoid any future problems? Also, would be self contained all in GitHub vs. spread across different entities.

[zssherman]

@mgrover1 made good progress on getting the repo up for the data. I added the rest of the test files in a PR to the repo, once that's done and v2 goes through (so there isn't conflicts and overlap) I can change the testing calls to use the arm_data repo for the testing.

[mgrover1]

@zssherman @AdamTheisen - I cut the first release(s) of arm-test-data, and it is installable via pypi! Waiting on feedback on the conda-forge recipe, but that should be good to go by tomrrow.

[zssherman]

@mgrover1 Awesome sounds good!