Please add service monitors for designate services

[Drew Freiberger]

Please implement service monitoring for nrpe-external-master relation on the designate charm for the services:

  designate-agent.service loaded active running OpenStack Designate DNSaaS Agent
  designate-api.service loaded active running OpenStack Designate DNSaaS API
  designate-central.service loaded active running OpenStack Designate DNSaaS central
  designate-mdns.service loaded active running OpenStack Designate DNSaaS mdns
  designate-producer.service loaded active running OpenStack Designate DNSaaS producer
  designate-sink.service loaded active running OpenStack Designate DNSaaS Sink
  designate-worker.service loaded active running OpenStack Designate DNSaaS worker

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/755691

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-designate/+/755691
Committed: https://opendev.org/openstack/charm-designate/commit/3ae0be599b4433919e3db6526a26070fea536db5
Submitter: "Zuul (22348)"
Branch: master

commit 3ae0be599b4433919e3db6526a26070fea536db5
Author: Xav Paice <email address hidden>
Date: Fri Oct 2 13:13:22 2020 +1300

    Add NRPE checks for services

    Adds the nrpe-external-master layer and checks for services managed by
    this charm.

    func-test-pr: https://github.com/openstack-charmers/zaza-openstack-tests/pull/436

    Change-Id: Ice5eada838626059f8cb2c427f7b9b0884317660
    Closes-Bug: #1897809
    Related-Bug: #1933643
    Co-authored-by: Aurelien Lourot <email address hidden>