Multiple considerations when upgrading from 3.7 with GlusterFS

Issue

This is a multiple error scenario that could be summarized as "GlusterFS health check errors during upgrade process".

Resolution Steps error map:
1) Ansible volume health check errors.
2) Mismatch between latest ansible playbooks and 3.9 upgrade documentation.
3) How to fix heketidb brick-multiplexing issues that are frequent with OCS versions < 3.10