Changes include:
1. Move core/config to controller/config
2. Change the job_service and gcreadonly to depends on lib/config instead of core/config
3. Move the config related dao, manager and driver to pkg/config
4. Adjust the invocation of the config API, most of then should provide a context parameter, when accessing system config, you can call it with background context, when accessing user config, the context should provide orm.Context
Signed-off-by: stonezdj <stonezdj@gmail.com>
