REST endpoint settings/saslauthdAuth not documented

In the documentation of LDAP authentication, there is no hint how to programmatically check the current LDAP settings. Apparently these settings can be retrieved over the settings/saslauthdAuth endpoint, which is however not documented.

Request:

• Provide documentation for the settings/saslauthdAuth REST endpoint
• Include it into the REST API reference documentation
• Reference it in a meaningful way from the LDAP setup guide and from the documentation of the couchbase-cli setting-ldap command