Kopia Pod Volume Backup/Restore Smoking Test Changes

[Lyndon-Li]

Add changes for problems/enhancements found during smoking test for Kopia pod volume backup/restore

[codecov-commenter]

Codecov Report

Merging #5282 (b4364b1) into main (0282e65) will decrease coverage by 0.11%.
The diff coverage is 12.24%.

@@            Coverage Diff             @@
##             main    #5282      +/-   ##
==========================================
- Coverage   40.73%   40.61%   -0.12%     
==========================================
  Files         232      233       +1     
  Lines       20228    20277      +49     
==========================================
- Hits         8239     8236       -3     
- Misses      11390    11443      +53     
+ Partials      599      598       -1     

Impacted Files	Coverage Δ
pkg/controller/pod_volume_restore_controller.go	25.39% <0.00%> (+0.52%)	⬆️
pkg/podvolume/restorer.go	11.64% <0.00%> (-0.09%)	⬇️
pkg/podvolume/util.go	82.96% <0.00%> (-2.54%)	⬇️
pkg/repository/backup_repo_op.go	0.00% <0.00%> (ø)
pkg/repository/provider/restic.go	0.00% <0.00%> (ø)
pkg/repository/udmrepo/kopialib/lib_repo.go	28.91% <0.00%> (-0.24%)	⬇️
pkg/uploader/kopia/snapshot.go	35.79% <0.00%> (-0.63%)	⬇️
pkg/uploader/provider/provider.go	0.00% <0.00%> (ø)
pkg/util/logging/kopia_log.go	24.32% <0.00%> (ø)
pkg/repository/manager.go	18.89% <7.14%> (-2.16%)	⬇️
... and 6 more

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[Lyndon-Li]

Fixed issues:

1. PVB/PVR controller gets BackupRepository and ensure it is ready
2. ensureRepo function in BackupRepositoryController checks the error message "Is there a repository at the following location?", this is for Restic only, we need to support Kopia path
3. We have a logic in BackupStorageLocationController that checks the folder in the remote object store. For Kopia path, we've added a new folder for Kopia repository, we need to enhance the check logic, otherwise, it reports errors
4. Add support to write Kopia log to Velero log for Kopia uploader
5. The "logSource" field in kopia_log is duplicated with the existing Velero log, so changed it to "logModule"
6. Fixed the problem that Restorer missed filling the UploaderType when creating BackupRepository
7. Fixed a problem that rp.extraFlags may be overwritten when there are parallel backups
8. Change the concurrent number of upstream write to the default value of Kopia
9. Remove wrapping errors for io.Reader, io.Writer, io.Closer and io.Seeker in kopia_lib, as the caller may track the well known system errors

[reasonerjt]

lgtm