DCOS-14694: split healthchecks

[Poltergeist]

Checklist

• Did you add a JIRA issue in a commit message or as part of the branch name?
• Did you add new unit tests?
• Did you add new integration tests?
• If this is a regression, did you write a test to catch this in the future?

Part of #2076

[d2iq-mergebot]

This repo has @mesosphere-mergebot integration. You can interact with the following commands.

@mesosphere-mergebot ship-it
@mesosphere-mergebot integrate
@mesosphere-mergebot test

[nLight]

Why do we want to extract that piece? :)

[nLight]

Looks and works good though

[orlandohohmeier]

@nLight extracting the form reducers is the first towards making the reducers service type agnostic.

[Poltergeist]

mesosphere-ci retest this please

[nLight]

flicts!

[Poltergeist]

run integration tests

[jfurrow]

Looks & works well!