Rename server internal types
- Rename `job_info` to `job_metadata` - Rename `adhoc_storage_info` to `adhoc_storage_metadata` - Rename `pfs_storage_info` to `pfs_storage_metadata`
- Rename `job_info` to `job_metadata` - Rename `adhoc_storage_info` to `adhoc_storage_metadata` - Rename `pfs_storage_info` to `pfs_storage_metadata`