libexec/archive-vhost-db: skip table performance_schema
libexec/archive-vhost-db: skip table performance_schema

this script is not able to lock the tables on this database, causing backup
of it to fail. Skipping that table from now on.

devpanel/serverlink,devpanel/serverlink,devpanel/serverlink,devpanel/serverlink,devpanel/serverlink