Fixes #4608 - Added description field to role

Fixes #16624 - Make AuthSourceLDAP taxable

This allows users to set organizations/locations on AuthSourceLDAP
objects. That in itself might not be that useful, but it allows us to
follow on and assign the AuthSourceLDAP taxonomies to the users
autocreated through it.

Fixes #16525 - host/hostgroup - include _name fields for proxy

Adding the following attributes for consistency:
puppet_proxy_name
puppet_ca_proxy_name

Fixes #15846 - Renamed use_puppet_default to omit in LookupValue

Fixes #7806 - allow taxonomy association on role level

Fixes #15771 - add :token to the values returned by the API

Refs #12193 - Remove remaining cached counters

Fixes #15527 - api/v2/hosts is slow loading permissions

The .eager_load call when called with [] generates a SELECT query that
selects all host attributes. This can cause it to take a lot longer
when there are large number of hosts involved. These attributes are...

fixes #14666 - support IPv6 in UI

fixes #13845 - remove 1.13 deprecations