cleanup: Remove expired ports:

2022-06-30 www/py-dj32-django-filter: Obsolete, please use www/py-django-filter
instead
2022-06-30 www/py-dj32-djangorestframework: Obsolete, please use
www/py-djangorestframework instead
2022-06-30 www/py-dj32-drf-yasg: Obsolete, please use www/py-drf-yasg instead
2022-06-30 www/py-dj32-django-cacheops: Obsolete, please use
www/py-django-cacheops instead
2022-06-30 www/py-dj32-django-graphiql-debug-toolbar: Obsolete, please use
www/py-django-graphiql-debug-toolbar instead
2022-06-30 devel/py-dj32-django-rq: Obsolete, please use devel/py-django-rq
instead
2022-06-30 www/py-dj32-django-tables2: Obsolete, please use
www/py-django-tables2 instead
2022-06-30 www/py-dj32-django-prometheus: Obsolete, please use
www/py-django-prometheus instead
2022-06-30 www/py-dj32-django-treebeard: Obsolete, please use
www/py-django-treebeard instead
2022-06-30 www/py-dj32-django-mptt: Obsolete, please use www/py-django-mptt
instead
2022-06-30 devel/py-dj32-graphene-django: Obsolete, please use
devel/py-graphene-django instead
2022-06-30 www/py-dj32-django-taggit: Obsolete, please use www/py-django-taggit
instead
2022-06-30 www/py-dj32-django-auth-ldap: Obsolete, please use
www/py-django-auth-ldap instead
2022-06-30 www/py-dj32-django-cors-headers: Obsolete, please use
www/py-django-cors-headers instead
2022-06-30 www/py-dj32-django-debug-toolbar: Obsolete, please use
www/py-django-debug-toolbar instead
2022-06-30 www/py-dj32-django-redis: Obsolete, please use www/py-django-redis
instead
2022-06-30 www/py-dj32-django-timezone-field: Obsolete, please use
www/py-django-timezone-field instead
2022-06-30 www/py-dj32-django-js-asset: Obsolete, please use
www/py-django-js-asset instead

*/py-dj32-*: Deprecate/Set to expire

* The port net-mgmt/netbox was switched from Django 3.2 to Django 4.0
  in d96a960530f3c20a9edd7837583ff7bec092566f.

  Since then all the */py-dj32-* ports have no more consumers and all
  the other Django ports have been switched to Django 3.2 in the last
  few weeks. [1] Hence the py-dj32-* ports are redundant now.

  Mark the py-dj32-* as deprecated and set an expiration to the end of
  2022Q2 to get a clean 2022Q3 branch.

PR:		261313 [1]

www/py-dj32-django-auth-ldap: Update to 4.0.0

* Python 3.6 is now gone from the Ports so remove the cruft that was
  required for it.

* Add a workaround to make the port still buildable with Python's
  distutils by using the "setup.py" from the previous release.

Changelog:

https://github.com/django-auth-ldap/django-auth-ldap/releases/tag/4.0.0

MFH:		2022Q1

www/py-dj32-django-auth-ldap: Update to 3.0.0

Changelog:

https://github.com/django-auth-ldap/django-auth-ldap/blob/3.0.0/CHANGES

MFH:		No (contains backwards incompatible changes)

*: Create Django 3.2 ports for net-mgmt/netbox

* Django 2.2 is currently the "default" version in the ports tree due
  its long term support until April 2022.  Thus ports that are assigned
  to that version will exist until then.

  The following ports are required to make the upgrade of
  net-mgmt/netbox to the 2.11 release possible because it requires
  Django 3.2.  All of the ports listed below were created on the basis
  of their respective original ports:

  - devel/py-dj32-django-rq
  - www/py-dj32-django-auth-ldap
  - www/py-dj32-django-cacheops (updated to a newer release)
  - www/py-dj32-django-cors-headers