## What
- This is the first PR for #4890.
- This PR does not remove the config volume.
- This PR does not mount the directories for the local connectors.
- Resolves#5373.
## How
- Previously the seed container copies the configs to the storage root, it may take some time for the operation to complete and for the `CONFIG_DIR` to show up. So we cannot infer anything based on the existence of this directory. Now this seed generation step has been removed. So we can tell immediately whether `CONFIG_DIR` exists or not.
- If `CONFIG_DIR` exists, it means the user has just migrated Airbyte from an old version that uses this file system config persistence.
- Otherwise, we can seed the config persistence from the YAML files.