Include description directly in python docstrings

[therve]

mustache escaping the description make them render weirdly, including sometimes
unsupported characters in python.

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• Read the contribution guidelines.
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[therve]

@taxpon (2017/07) @frol (2017/07) @mbohlool (2017/07) @cbornet (2017/09) @kenjones-cisco (2017/11) @tomplus (2018/10) @Jyhess (2019/01) @arun-nalla (2019/11) @spacether (2019/11) 🙇

[spacether]

Thank you for the PR, it looks good!