feat(ldap): refactoring of PR #2928 updated docs

conf/ldap.toml

@@ -18,30 +18,19 @@ bind_dn = "cn=admin,dc=grafana,dc=org"
 # Search user bind password
 bind_password = 'grafana'
 
-# Schema's supporting memberOf
-
-# Search filter, for example "(cn=%s)" or "(sAMAccountName=%s)"
+# User search filter, for example "(cn=%s)" or "(sAMAccountName=%s)" or "(uid=%s)"
 search_filter = "(cn=%s)"
+
 # An array of base dns to search through
 search_base_dns = ["dc=grafana,dc=org"]
 
-# Uncomment this section (and comment out the previous 2 entries) to use POSIX schema.
-# In POSIX LDAP schemas, querying the people 'ou' gives you entries that do not have a
-# memberOf attribute, so a secondary query must be made for groups. This is done by
-# enabling group_search_filter below. You must also set
-#    member_of = "cn"
+# In POSIX LDAP schemas, without memberOf attribute a secondary query must be made for groups.
+# This is done by enabling group_search_filter below. You must also set member_of= "cn"
 # in [servers.attributes] below.
-#
-# Search filter, used to retrieve the user
-# search_filter = "(uid=%s)"
-#
-# An array of the base DNs to search through for users. Typically uses ou=people.
-# search_base_dns = ["ou=people,dc=grafana,dc=org"]
-#
-# Group search filter, to retrieve the groups of which the user is a member
+
+## Group search filter, to retrieve the groups of which the user is a member (only set if memberOf attribute is not available)
 # group_search_filter = "(&(objectClass=posixGroup)(memberUid=%s))"
-#
-# An array of the base DNs to search through for groups. Typically uses ou=groups
+## An array of the base DNs to search through for groups. Typically uses ou=groups
 # group_search_base_dns = ["ou=groups,dc=grafana,dc=org"]
 
 # Specify names of the ldap attributes your ldap uses