cherry pick support mounting btrfs volumes by the cinder-csi-plugin (#1941) to 1.24

[jichenjc]

What this PR does / why we need it:

Which issue this PR fixes(if applicable): fixes #

Special notes for reviewers:

Release note:

NONE

[jichenjc]

@shaardie @gman0 @zetaab can any of you lgtm to this so we can merge backport fix?

[zetaab]

/approve /lgtm

[jichenjc]

/test pull-cloud-provider-openstack-check

[jichenjc]

/test openstack-cloud-csi-manila-e2e-test-release-124

[gman0]

@jichenjc can you override the manila e2e test?

[jichenjc]

/override openstack-cloud-csi-manila-e2e-test-release-124

[k8s-ci-robot]

@jichenjc: Overrode contexts on behalf of jichenjc: openstack-cloud-csi-manila-e2e-test-release-124

In response to this:

/override openstack-cloud-csi-manila-e2e-test-release-124

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[jichenjc]

I don't know whether it's env issue ?

[jichenjc]

@zetaab @gman0 please help lgtm here.. thanks

[zetaab]

/approve /lgtm

[k8s-ci-robot]

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