ipa_backup: Log where the backup is be stored

This makes managing multiple backups & logs easier.

Reviewed-By: Tomas Babej <tbabej@redhat.com>

ipaserver/install/ipa_backup.py

@@ -553,6 +553,8 @@ class Backup(admintool.AdminTool):
 
         shutil.move(self.header, backup_dir)
 
+        self.log.info('Backed up to %s', backup_dir)
+
     def __find_scripts_dir(self, instance):
         """
         IPA stores its 389-ds scripts in a different directory than dogtag