Deprecate Monasca and dependencies

Adds a deprecation notice for Monasca service together with
its dependecies: Kafka, Storm and Zookeeper.

Change-Id: Ia9daf170ce9157edb2132c69ee6a923bc4d6f980

releasenotes/notes/deprecate-monasca-9f6075d447e939d4.yaml

+---
+deprecations:
+  - |
+    Deprecates support for the ``Monasca`` service together with its
+    dependencies: ``Kafka``, ``Storm`` and ``Zookeeper``. They will
+    be removed in the Antelope cycle. Prometheus + Grafana + EFK remain
+    as the primary monitoring, logging and alerting stack in Kolla Ansible.