[Bro] Logging and memory leak

[Hovsep Levi]

...The saga continues...

Disabling protocols/ssl/validate-certs relieved the rapid memory leak but
the problem still exists over long periods of time.

Implemented the change on Feb 6th and by Feb 18th the VZSIZE / RSS was 32G
/ 2G.  By Feb 23rd it was 337G / 24G.

FWIW I'm considering migrating the cluster to Intel CPUs but they are the
same speed so I'm not sure it's worth the trouble since the worker count
will remain the same.
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