[7.x] [APM] Add support for very high durations (minutes and hours) (#41640)

[bartvanremortele]

Backports the following commits to 7.x:

• [APM] Add support for very high durations (minutes and hours) ([APM] Add support for very high durations (minutes and hours) #41640)

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[bartvanremortele]

PR automatically opened through backport but ran into an issue while labeling because of access rights. Not sure if this affects anything else other than the labels.

➜  kibana git:(master) yarn backport
yarn run v1.16.0
$ /Users/bartvanremortele/projects/kibana/node_modules/.bin/backport
? Select commit to backport #41640
? Select branch to backport to (Press <space> to select, <a> to toggle all, <i> to invert selection)7.x
✔ 100% Cloning repository (one-time operation)

Backporting the following commits to 7.x:
 - [APM] Add support for very high durations (minutes and hours) (#41640)

✔ Pulling latest changes
✔ Cherry-picking commit 7ff85c4a
✔ Pushing branch bartvanremortele:backport/7.x/pr-41640
✖ Creating pull request
{
    "message": "Must have admin rights to Repository.",
    "documentation_url": "https://developer.github.com/v3/issues/labels/#add-labels-to-an-issue",
    "axiosUrl": "https://api.github.com/repos/elastic/kibana/issues/42068/labels?access_token=<redacted>"
}
✨  Done in 94.25s.
➜  kibana git:(master)

[sorenlouv]

@bartvanremortele Ahhh, that's interesting. Never occurred to me that adding labels requires special access. Good to know - maybe I can adapt the backport tool to be more nice about it.