[BUG] db-s3-object not part of config loading #584
Description
Describe the bug
The s3 loading doesn't work because the db-s3-object key is not part of the configuration loading in config.cpp.
To reproduce
keydb-server /etc/keydb/redis.conf --db-s3-object s3:/any-bucket/any-object.rdb
Expected behavior
s3 rdb object saving/loading should work.
Additional information
The rest of the logic is there except that part, so I'm not sure how it was tested or if it was removed on purpose and the documentation needs to be updated.