LDAP connection timeout during long running processes

[PVince81]

It has been observed that sometimes after long running processes, the LDAP connection can time out.

One idea would be to regularily reconnection to LDAP, or even detect the timeout and issue a single reconnection attempt.

I seem to remember that @jvillafanez said it was tricky or not possible. Can you repost your answer here ?

One other solution that we'll need soon is to have a user account table https://github.com/owncloud/core/issues/23558 to remove the need to connect to LDAP that often, which should solve most of the timeout problems.

@jvillafanez @butonic @DeepDiver1975