Fixed #21648 -- Deprecated is_admin_site option to auth.views.password_reset().

import itertools

import os

import re

import warnings

from django.apps import apps

from django.conf import global_settings, settings

    @override_settings(ALLOWED_HOSTS=['adminsite.com'])

    def test_admin_reset(self):

        "If the reset view is marked as being for admin, the HTTP_HOST header is used for a domain override."

        with warnings.catch_warnings(record=True):

            warnings.simplefilter("always")

            response = self.client.post('/admin_password_reset/',

                {'email': 'staffmember@example.com'},

                HTTP_HOST='adminsite.com'

import warnings

from django.conf import settings

from django.core.urlresolvers import reverse

from django.http import HttpResponseRedirect, QueryDict

from django.template.response import TemplateResponse

from django.utils.deprecation import RemovedInDjango20Warning

from django.utils.http import is_safe_url, urlsafe_base64_decode

from django.utils.translation import ugettext as _

from django.utils.six.moves.urllib.parse import urlparse, urlunparse

                'html_email_template_name': html_email_template_name,

            }

            if is_admin_site:

                warnings.warn(

                    "The is_admin_site argument to "

                    "django.contrib.auth.views.password_reset() is deprecated "

                    "and will be removed in Django 2.0.",

                    RemovedInDjango20Warning, 3

                )

                opts = dict(opts, domain_override=request.get_host())

            form.save(**opts)

            return HttpResponseRedirect(post_reset_redirect)

* The ``remove_tags()`` and ``strip_entities()`` functions in

  ``django.utils.html`` will be removed.

* The ``is_admin_site`` argument to

  ``django.contrib.auth.views.password_reset()`` will be removed.

.. _deprecation-removed-in-1.9:

1.9

The unused and undocumented ``django.utils.html.strip_entities()`` function has

also been deprecated.

``is_admin_site`` argument to ``django.contrib.auth.views.password_reset()``

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

It's a legacy option that should no longer be necessary.

        ``html_email_template_name`` was added.

    .. deprecated:: 1.8

        The ``is_admin_site`` argument is deprecated and will be removed in

        Django 2.0.

    **Template context:**

    * ``form``: The form (see ``password_reset_form`` above) for resetting