Volume temporary resources not deleted with Volume Glance Plugin protect

[Mohamed El Gindi]

When doing volume backup, the following temporary resources are created in the given order before uploading to swift:

1. volume snapshot
2. temporary volume from snapshot
3. temporary image from volume

The code tries to delete in the same order, instead of the reverse order, which cause some resources to fail deleting (temporary image and temporary snapshot)

https://github.com/openstack/karbor/blob/master/karbor/services/protection/protection_plugins/volume/volume_glance_plugin.py#L286

How to reproduce:
1. Ensure provider uses volume glance plugin
2. Create volume
3. Create plan and checkpoint

Temporary image and volume snapshot will still remain. Only temp volume will be deleted. Can inspect with:
`openstack volume list`, `openstack volume snapshot list`, `openstack image list`

[Mohamed El Gindi (gindi)]

submitted review: https://review.openstack.org/#/c/641162

[Srinivasa Reddy (srinivasareddym)]

I'm also hitting the same issue and https://review.openstack.org/#/c/641162 fix's that issue

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Ghanshyam <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/karbor/+/641162
Reason: karbor is retired now http://lists.openstack.org/pipermail/openstack-discuss/2020-November/018643.html