issue 7583: set backupName optional for Restore CRD

Signed-off-by: Lyndon-Li <lyonghui@vmware.com>

changelogs/unreleased/7617-Lyndon-Li

@@ -0,0 +1 @@
+Fix issue #7583, set backupName optional for Restore CRD

config/crd/v1/bases/velero.io_restores.yaml

@@ -432,8 +432,6 @@ spec:
                     nullable: true
                     type: boolean
                 type: object
-            required:
-            - backupName
             type: object
           status:
             description: RestoreStatus captures the current status of a Velero restore

pkg/apis/velero/v1/restore_types.go

@@ -26,7 +26,8 @@ import (
 type RestoreSpec struct {
 	// BackupName is the unique name of the Velero backup to restore
 	// from.
-	BackupName string `json:"backupName"`
+	// +optional
+	BackupName string `json:"backupName,omitempty"`
 
 	// ScheduleName is the unique name of the Velero schedule to restore
 	// from. If specified, and BackupName is empty, Velero will restore