We've disabled this in the token store, but it makes no sense to have
that disabled but have it enabled elsewhere. It's the same issue across
all, so simply remove the ability altogether.
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Added new configuration option to ldap auth backend - groupfilter.
GroupFilter accepts a Go template which will be used in conjunction with
GroupDN for finding the groups a user is a member of. The template will
be provided with context consisting of UserDN and Username.
Simplified group membership lookup significantly to support multiple use-cases:
* Enumerating groups via memberOf attribute on user object
* Previous default behavior of querying groups based on member/memberUid/uniqueMember attributes
* Custom queries to support nested groups in AD via LDAP_MATCHING_RULE_IN_CHAIN matchind rule
There is now a new configuration option - groupattr - which specifies
how to resolve group membership from the objects returned by the primary groupfilter query.
Additional changes:
* Clarify documentation for LDAP auth backend.
* Reworked how default values are set, added tests
* Removed Dial from LDAP config read. Network should not affect configuration.
