Always include all config files in the update package

The packaging script cannot handle 3.2's new config structure (the config files are now in multiple subdirectories, so we need to recursively copy all of them if any of them changes).

Currently the update packages always include the files matching this pattern: `config/*.yml` and that's fine for 3.1. But in 3.2 the config files are split in multiple sub directories and we always need all of them. We need to include the whole config directory now (including the sub directories)