feat(snaphots): support for orLabelSelectors (#2893)

* feat(snaphots): support for orLabelSelectors

* Update custom-resource-backup.md

---------

Co-authored-by: Alex Parker <[email protected]>

Author: emosbaugh

docs/reference/custom-resource-backup.md

@@ -30,6 +30,9 @@ spec:
   - '*'
   excludedNamespaces:
   - some-namespace
+  orLabelSelectors:
+  - matchLabels:
+      app: my-app
   orderedResources:
     pods: mysql/mysql-cluster-replica-0,mysql/mysql-cluster-replica-1
     persistentvolumes: pvc-12345,pvc-67890
@@ -78,6 +81,10 @@ The following Velero fields are supported for full backups, as shown in the prev
     <td><code>excludedNamespaces</code></td>
     <td>(Optional) Specifies an array of namespaces to exclude from the backup.</td>
   </tr>
+  <tr>
+    <td><code>orLabelSelectors</code></td>
+    <td>(Optional) A list of metav1.LabelSelector to filter with when adding individual objects to the backup. If multiple are provided, they will be joined by the OR operator.</td>
+  </tr>
   <tr>
     <td><code>orderedResources</code></td>
     <td>(Optional) Specifies the order of the resources to collect during the backup process. This is a map that uses a key as the plural resource. Each resource name has the format NAMESPACE/OBJECTNAME. The object names are a comma delimited list. For cluster resources, use OBJECTNAME only.</td>