by default:

• increase the connection pool size and
• set retry to 3 (number of retries each connection should attempt).

These config params can be set directly from config files for 'remote'
api clients. For example, to specify these in an objstorage client
config file:

objstorage:
  cls: remote
  args:
    url: swh-objstorage:5003
    max_retries: 5
    pool_connections: 100

This is needed for example for swh-journal's content-replayer to be able to spawn more then 10 worker threads.