Comment 13 for bug 1986988

Reviewed: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/854022
Committed: https://opendev.org/openstack/tripleo-heat-templates/commit/a08f4b1d297c915f4b4c7e5286af0e7a2177c99f
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit a08f4b1d297c915f4b4c7e5286af0e7a2177c99f
Author: John Fulton <email address hidden>
Date: Thu Aug 18 16:09:07 2022 -0400

    Introduce ExternalCeph boolean

    Add explicit parameter for when external ceph is used.
    This parameter defaults to false but is true if the
    deployment uses -e environments/external-ceph.yaml.

    When external ceph is used with Ganesha, the ceph_mon
    group is empty but the ceph_nfs group is not. When
    internal ceph is used with Ganesha, both the ceph_mon
    and ceph_nfs groups are non-empty. Rather than solve
    the related bug by adding another condition based on
    these groups which is compatible existing logic, it's
    safer to have an explicit parameter for when external
    ceph is used.

    Change-Id: Id3e397d81dbca9a48d0456588784bcc20737093f
    Depends-On: I2651c2850debd8110da93df2adc5fd8768a00db0
    Closes-Bug: #1986988
    (cherry picked from commit e031058520ea36feff7e1956ae0d146ef5b19817)