[FEATURE] Support LDAP pool pruning

[Martin-Kemp]

Is your feature request related to a problem?

LDAP pool pruning is a common requirement for connecting to productive ldap servers. Currently the pruning period and idle time is hard coded to 5 and 10 minutes respectively. It would be nice to be able to configure this through config.yml.

What solution would you like?

Configure ldap connection pool pruning period and idle time through config.yml. For example, currently you can enable pooling and set the min and max size. ideally pool.idle_time and pool.pruning_period should also be configurable. Like this:

pool.enabled: true
pool.min_size: 0
pool.max_size: 5
pool.idle_time: 2
pool.pruning_period: 1

What alternatives have you considered?

I'm currently running a custom image with above change.

Do you have any additional context?

Pruning period and idle time is currently set here

Maybe I'm not understanding the code correctly and this config can actually be set somewhere because there is a setting referenced:

        result.setPruneStrategy(new IdlePruneStrategy(Duration.ofMinutes(this.settings.getAsLong("pruning.period", 5l)),
                Duration.ofMinutes(this.settings.getAsLong("pruning.idleTime", 10l))));

But I have no idea where to set pruning.period and pruning.idleTime.

[peternied]

The fix for this issue has been merged, and will be released in the next 2.X distribution