add iotop

[matthiasdiener]

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[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/iotop) and found it was in an excellent condition.

[matthiasdiener]

This is ready for review @conda-forge/help-c-cpp

[matthiasdiener]

A gentle ping for a review @conda-forge/core @conda-forge/help-c-cpp

[xhochy]

I would prefer if we put this into bin. We don't populate sbin in conda-forge normally.

[matthiasdiener]

Thanks, done in af576a3