Comment 5 for bug 1856661

Reviewed: https://review.opendev.org/700155
Committed: https://git.openstack.org/cgit/openstack/tripleo-common/commit/?id=13b77d3670ccd69530850fe72c6dba33e663cc64
Submitter: Zuul
Branch: stable/stein

commit 13b77d3670ccd69530850fe72c6dba33e663cc64
Author: Rabi Mishra <email address hidden>
Date: Tue Dec 17 12:32:54 2019 +0530

    Ensure blacklisted nodes are not included in server_names

    'ServerIdData' map actually returns 'None' ids for blacklisted
    nodes for a role, as 'nova_server_resource' output is
    evaluated with condition 'server_not_blacklisted'. This
    results in get_server_names() returning these blacklisted
    nodes with something like 'None: compute-1' and results
    in issues when we write ansible_host_vars. As we don't intend to
    write ansible_host_vars for blacklisted nodes, we can ignore
    these from 'server_names'.

    Closes-bug: #1856661
    Change-Id: Iafecc885abac5583c07bc046bc4d541f5e1e1c00
    (cherry picked from commit d407c96d17020a15395ba4f6537e03e596caedaa)