send links to Jaeger reporter, if set

[hughsimpson]

Also:

• Add a 'ChildOf' link type Removed for now
• Bump com.dimafeng libs in elasticsearch module to help the failing test
• Made the datadog test a little more forgiving (it appears that the type of exception thrown depends on the architecture or something)

Enables the following view in recent versions of Jaeger UI

[SimunKaracic]

Nice PR, and thanks for the driveby fixes!
But this PR touches kamon-core, so we'll need to take a closer look at it!

Thanks for the patience :D

[hughsimpson]

If it speeds up the process of review I can just remove the ChildOf case object, since it's the only thing being touched in core, and FollowsFrom is almost as good for my purposes

[SimunKaracic]

Yes please remove ChildOf, without that this should be a no brainer to merge :)

[hughsimpson]

K reverted that. May make a separate pr though - I'd still like ChildOf 😄

[SimunKaracic]

K reverted that. May make a separate pr though - I'd still like ChildOf

Please do, and feel free to write the motivation for it, so we know what ChildOf brings to the table that can't be modelled with FollowsFrom.

Thanks for the contribution :)

[SimunKaracic]

Sorry for the conflicts! :D
If you have the time, fix them, if not, I'll deal with it tomorrow and merge :)

[hughsimpson]

No problem, will do now

[hughsimpson]

All done 👍

[SimunKaracic]

Great job on the whole PR, thanks for the contribution! 🎉