feat: Add B2 recovery bootstrap to CNPG cluster

infrastructure/addons/cnpg/postgres-cluster.yaml

@@ -31,6 +31,23 @@ spec:
   superuserSecret:
     name: rancher-db-password
 
+  bootstrap:
+    recovery:
+      source: b2-backup
+
+  externalClusters:
+    - name: b2-backup
+      barmanObjectStore:
+        destinationPath: "s3://HetznerTerra/rancher-backups/"
+        endpointURL: "https://s3.us-east-005.backblazeb2.com"
+        s3Credentials:
+          accessKeyId:
+            name: b2-credentials
+            key: B2_ACCOUNT_ID
+          secretAccessKey:
+            name: b2-credentials
+            key: B2_APPLICATION_KEY
+
   monitoring:
     enablePodMonitor: false