Blog about `pants test` and `pants package`

[cczona]

Doesn't need to be long. Essentially a narrative elaboration on https://www.pantsbuild.org/docs/python-test-goal#depending-on-packages.

[AlexTereshenkov]

@cczona I am sorry, what section in the documentation page does your link refer to? https://www.pantsbuild.org/docs/python-test-goal#depending-on-packages doesn't point me to a page section for any of the recent Pants version. I can't see the section named this as well.

[cczona]

Good question. This was ported from an older issue on the Toolchain private tracker. The link seems to have fallen out of date. @Eric-Arellano @chrisjrn you know the docs best -- do you recall what happened to that content?

[Eric-Arellano]

Looks like it is now called https://www.pantsbuild.org/docs/python-test-goal#testing-your-packaging-pipeline