Use uuid from header if present

[bravesirrobin81]

This enables tracking requests across microservices, provided the appropriate header is set on the outgoing HTTP request. Very useful for analysing performance problems.

I've not done the work here to pull a UUID from the request parameter instead, but that should be a simple enough extension.

[jaykeshur]

hi @bravesirrobin81 could you push this to a branch on the repo, to get it through CI etc please.

[bravesirrobin81]

Done.

[zuzak]

@bravesirrobin81 could you make sure the email address you used to commit 281cbcf9441a1973c8ed047991601fabc294d05e is associated with your GitHub account (you can add email addresses at https://github.com/settings/emails)

[bravesirrobin81]

@zuzak I'm afraid I can't. I no longer have access to that e-mail, hence why I had removed it.