[Zeek] json formatter

[Johanna Amann]

Hi Mauro,

> we had some issues with the json formatter, which we are using with
> kafka. We temporarily patched this and it is working fine for now.
> However, probably a more general revision could be better, possibly
> using an external library for the conversion to json format. I saw in
> github somebody is already working on it, right? So, I guess we just
> have to wait for next zeek's version?

Yup, that is the plan. For more information see the github bug at
https://github.com/zeek/zeek/issues/150 and the pull request at
https://github.com/zeek/zeek/pull/451; I assume this will be merged into
master in not too long.

Johanna