Please merge johanna/conn-tunnels-empty

Description

Please merge johanna/conn-tunnels-empty in Bro and the external tests.

This commit makes the tunnel_parents in conn.log optional.

This makes conn.logs a bit prettier (and smaller) because all lines that do not use a tunnel will now have a "-" instead of the "(empty)" for tunnel_parents.

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None

Assignee

Jon Siwek

Reporter

Johanna Amann

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