Include the newrelic-grape gem

At the moment we have no insight via NewRelic into what API requests are doing, because they are all lumped together in one category 'Proc#call'. Considering 'Proc#call' is one of the top time-hogs on gitlab.com, I think it would be nice if we could break it down.

We can do that by adding this Gem: https://github.com/xinminlabs/newrelic-grape

cc @dzaporozhets @JobV

Milestone changed to 8.0

mentioned in issue #2350 (closed)

@jacobvosmaer I don't see an issue of doing this in a patch release, if you want to get some insights fast. Might also be nice for Yorick.

Reassigned to @jacobvosmaer

!1419 (merged)

Saner data now:

Status changed to closed