Add a BSL controller to handle validation + update BSL status phase (#2674)

* Add BSL controller

Signed-off-by: Carlisia <carlisia@vmware.com>

* Add changelog

Signed-off-by: Carlisia <carlisia@vmware.com>

* Make update

Signed-off-by: Carlisia <carlisia@vmware.com>

* Update docs

Signed-off-by: Carlisia <carlisia@vmware.com>

* Add kubebuilder dependency

Signed-off-by: Carlisia <carlisia@vmware.com>

* Add export

Signed-off-by: Carlisia <carlisia@vmware.com>

* add kubebuilder binaries into velero builder image

Signed-off-by: Ashish Amarnath <ashisham@vmware.com>

* Reset velero dockerfile

Signed-off-by: Carlisia <carlisia@vmware.com>

* Consolidate all logic

Signed-off-by: Carlisia <carlisia@vmware.com>

* Add copyright header

Signed-off-by: Carlisia <carlisia@vmware.com>

* Clean up + add "last validated" column

Signed-off-by: Carlisia <carlisia@vmware.com>

* Better tests

Signed-off-by: Carlisia <carlisia@vmware.com>

* Add more tests

Signed-off-by: Carlisia <carlisia@vmware.com>

* Better logging

Signed-off-by: Carlisia <carlisia@vmware.com>

* Format

Signed-off-by: Carlisia <carlisia@vmware.com>

* Code reviews

Signed-off-by: Carlisia <carlisia@vmware.com>

* Address code review

Signed-off-by: Carlisia <carlisia@vmware.com>

* Remove redundant logic

Signed-off-by: Carlisia <carlisia@vmware.com>

Co-authored-by: Ashish Amarnath <ashisham@vmware.com>

pkg/cmd/util/output/backup_storage_location_printer.go

@@ -31,6 +31,7 @@ var (
 		{Name: "Provider"},
 		{Name: "Bucket/Prefix"},
 		{Name: "Phase"},
+		{Name: "Last Validated"},
 		{Name: "Access Mode"},
 	}
 )
@@ -64,11 +65,18 @@ func printBackupStorageLocation(location *velerov1api.BackupStorageLocation) []m
 		status = "Unknown"
 	}
 
+	lastValidated := location.Status.LastValidationTime
+	LastValidatedStr := "Unknown"
+	if lastValidated != nil {
+		LastValidatedStr = lastValidated.String()
+	}
+
 	row.Cells = append(row.Cells,
 		location.Name,
 		location.Spec.Provider,
 		bucketAndPrefix,
 		status,
+		LastValidatedStr,
 		accessMode,
 	)