performance: Add backup support (no data)

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/modules/performance/__init__.py

@@ -8,6 +8,7 @@ from django.utils.translation import gettext_lazy as _
 from plinth import app as app_module
 from plinth import menu
 from plinth.daemon import Daemon
+from plinth.modules.backups.components import BackupRestore
 
 from . import manifest
 
@@ -54,6 +55,10 @@ class PerformanceApp(app_module.App):
                               'performance:index', parent_url_name='system')
         self.add(menu_item)
 
+        backup_restore = BackupRestore('backup-restore-performance',
+                                       **manifest.backup)
+        self.add(backup_restore)
+
         daemon_0 = Daemon('daemon-performance-0', managed_services[0],
                           listen_ports=None)
         self.add(daemon_0)

plinth/modules/performance/manifest.py

@@ -12,3 +12,5 @@ clients = [{
         'url': '/_cockpit/metrics'
     }]
 }]
+
+backup = {}