[lightos] Compression handling in lightos driver while default compression enabled

[yuval]

compression in volume_stats is currently reported as the default compression flag - where it should be a list ['True', 'False'].
another issue is when the flag is enabled you cannot create a volume without compression.
fix patchset: https://review.opendev.org/c/openstack/cinder/+/830538

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/cinder/+/830538
Committed: https://opendev.org/openstack/cinder/commit/c04e2084f366e4728662ea73d9d6dc73b6e5b0e3
Submitter: "Zuul (22348)"
Branch: master

commit c04e2084f366e4728662ea73d9d6dc73b6e5b0e3
Author: yuval brave <email address hidden>
Date: Wed Feb 23 02:16:02 2022 +0200

    lightos - bugfix compression stats should be True

    the compression value in get_volume_stats should be ["True", "False"]
    and not dependent on the
    configuration: "lightos_default_compression_enabled"
    if the flag is false, we can not create volume type with
    compression=True. the backend is filtered in the scheduler.

    Closes-Bug: #1962221

    Signed-off-by: Yuval Brave <email address hidden>
    Change-Id: I09fe872eca1b112f67bad7297de5893696f83373

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 20.0.0.0rc1 release candidate.