Github user ottobackwards commented on the issue:
https://github.com/apache/metron/pull/774
I'm sorry nick, the instruction for 'how to build metron' from the top
level readme didn't get pulled over when I did the reconstruction.
The plugin is not in any repo for maven to install from. I don't know how
to get it installed since we don't publish it. I will check my list history,
but I think we (not you necessarily) talked about doing it this way until we
figured out if we were going to publish the plugin.
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