Updated DHCP analyzer and log (merge: topic/seth/dhcp-update)

Description

This is switching a pull request over to a merge request for a branch of mine. Reference pull request: https://github.com/bro/bro/pull/121

This is a pretty big rewrite of the DHCP analyzer and rework of the scripts so I'd like someone else to check over the code a bit and make sure I didn't miss anything obvious.

Environment

None

Assignee

Seth Hall

Reporter

Seth Hall

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Priority

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