PowerMax Driver Train - Safeguarding retype to some in-use replicated modes

[Helen Walsh]

Host assisted migration is a better option for retyping from a non-replicated
to a replicated (Asynchronous and Metro) modes. So we need to block these
2 retype scenarios when the volume is in-use within the PowerMax driver.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/train
Review: https://review.opendev.org/757035

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/757035
Committed: https://opendev.org/openstack/cinder/commit/fa48c21fba30c6d44ee9b96b8d657575e207e15c
Submitter: Zuul
Branch: stable/train

commit fa48c21fba30c6d44ee9b96b8d657575e207e15c
Author: Helen Walsh <email address hidden>
Date: Fri Feb 7 15:01:48 2020 +0000

    PowerMax Driver - Safeguarding retype to some in-use replicated modes

    Host assisted migration is a better option for retyping from a non-replicated
    to a replicated (Asynchronous and Metro) modes.

    1. Block in-use non-replicated to replicated(Metro and Asynchronous)
    2. Remove any unused code
    3. Differentiate between the production and the management storage groups
    4. Remove rollback code on a cleanup_lun, its not necessary on delete and
        will not always work
    5. Allow for a target device not to exist on the target array
    6. Fix minor issue on metadata on a retype

    Closes-Bug: #1899137
    Change-Id: I6c7c94528ee94183c1df21c25388505b28f1781a
    (cherry picked from commit 92aeec3ad9dbb0482c2531a0b42c06326ae945fd)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 15.4.1 release.