Comment 8 for bug 1863629

Reviewed: https://review.opendev.org/708485
Committed: https://git.openstack.org/cgit/openstack/tripleo-ansible/commit/?id=1a3620532e29a42ad4e05570979f9fee6725ddd7
Submitter: Zuul
Branch: stable/train

commit 1a3620532e29a42ad4e05570979f9fee6725ddd7
Author: John Fulton <email address hidden>
Date: Mon Feb 17 14:51:52 2020 -0500

    Do not inherit the calling ansible env by default

    As per I428f6deb416b540dae552b5fc7a778cbc7505e8c ANSIBLE_*
    environment variables are passed to Ansible executions which
    are used to deploy Ceph.

    The method of inheritance is fragile and possibly unsafe. This
    patch disables inheritance by default. In inheritance feature
    can be made more safe in subsequent patches for Related-Bug but
    but this new default should stay.

    Change-Id: Ifa6d147664fc993ca08c8fb2efa860f7605628cb
    Fixes-Bug: #1863629
    (cherry picked from commit 692678dce5b7f4950387c154086a0c1cdc6b887b)