[DOC-META ] Review LDAP configuration documentation and provide overall updates

[cwillum]

The Active Directory and LDAP documentation needs review and update of outdated and missing information. See also issue #905 to update Docker example.

Making this a META issue for LDAP so we can pick away at LDAP issues piecemeal. Known issues for LDAP are listed below, and others can be added to the list as we move along in our review of LDAP content.

• Add documentation for pool pruning period and idle time settings for LDAP #1583
• Edit LDAP documentation for custom_attr_allowlist so that it agrees with inclusive language code changes #1584
• Active Directory and LDAP Security Plugin zip is out-of-date. [DOC] Active Directory and LDAP Security Plugin zip is out-of-date #1365
• ldap docker example is outdated. [DOC] ldap docker example is outdated #905

[cwperks]

A new attribute for custom_return_attributes is under review now and will need to be added to the documentation website for a future release: opensearch-project/security#2093

[hdhalter]

Hi @cwperks - Looks like this setting was added in 2.4? It doesn't look like it was added to the documentation. Can you please provide some details or submit a PR? Thanks!

[cwperks]

@hdhalter Thank you for pinging. I will submit a PR to add custom_return_attributes to the LDAP documentation now that the linked PR has been merged.

[cwperks]

@hdhalter Opened a PR for the LDAP setting that was added: #5810

[hdhalter]

Since this is in progress and is the last item to address, I'll close this issue. See #1365