Add HPE Nimble driver patch to fix clone snapshot issue

[Yaguang Tang (yaguangtang)]

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[Yaguang Tang (yaguangtang)]

depends on #1138

[atlas-by-vexxhost]

Checked this quilt file against every product-branch Cinder ref from .github/workflows/build.yml.

0004-Fix-Nimble-clone-snapshot-cleanup-on-delete.patch does not apply as-is:

• current main / stable/2024.2+ Cinder uses eventlet.sleep(DEFAULT_SLEEP) in delete_volume; this patch still expects time.sleep(DEFAULT_SLEEP)
• stable/zed through stable/2024.1 also fail in test_nimble.py / nimble.py context after 0003
• upstream Gerrit https://review.opendev.org/c/openstack/cinder/+/994915 (dcf7e454ef38) still has time.sleep

I did not open competing 0004 backports. #1137 should stay the main vehicle after the patch is refreshed to the current Cinder tree. Older stables will need a real backport, not a byte-copy.

0003 is already on main and stable/2025.2; backports for the remaining stables are #1282–#1288.