Allow outputing test results as allure framework results.

[jmchilton]

Implements #1113.

xref http://allure.qatools.ru/

Quick Usage:

brew install allure
# Convert a Planemo/Ephemeris tool_test_outpt.json into a allure results directory 
planemo test_reports --test_output_allure allure_results/ ~/tool_test_outpt.json
# Generate a static site from that.
allure generate --clean allure_results/
# Serve and open with a browser (allure has a little shortcut for this)
allure open allure-repors/

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Landing summary.

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Can dig into "Categories" and filter by exception vs failure:

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Category view group similar problems together:

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Suite view allows digging into tools -> versions -> test index. Clicking a test allows access to a lot of data collected for debugging the problem.

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Pretty graphs that don't do a whole lot in our context.

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Pretty timeline that doesn't do a whole lot in our context.

[bgruening]

That is pretty cool!

John is this --test_output_allure allure not redundant? Should this be --test_output allure?

[mvdbeek]

That is in line with --test_output_markdown, --test_output_xunit etc.

[bgruening]

And is this not redundant? Having --test_output_allure and the positional argument allure seems unnecessary to me. Should I open another issue about that?

[jmchilton]

Here allure is the directory that is being created, I don't think things are redundant. I'll update the example commands to clarify that.

[bgruening]

Thanks @jmchilton for the explanation!