Bug: Config object not converted to string in log output

Summary

The log message for the loaded config currently outputs the Python object directly, which results the log message:

storage_api-1 | INFO:root:Following config found: <core.config.Config object at 0x78406d1d9970>

which does not show the actual config values.The config should be stringified before logging

Steps to Reproduce

1. Clone the Data Pipeline and move to the 'local' folder
2. Start the service locally via Docker Compose.
3. Observe the the storage_api logs.