class GenericSitemap doesn't handle "protocol" in __init__

[chex]

django.contrib.sitemaps.GenericSitemap doesn't accept "protocol" in initial args or kwargs.

some_sitemap = GenericSitemap(
      info_dict={
            'queryset': SomeModel.objects.all(),
        },
        priority=0.6,
        changefreq='yearly',
    )
some_sitemap.protocol = 'https'

​GenericSitemap source
Why not to pass protocol as keyword argument?

some_sitemap = GenericSitemap(
      info_dict={
            'queryset': SomeModel.objects.all(),
        },
        priority=0.6,
        changefreq='yearly',
        protocol='https',
    )

[chex]

​pr

[Tim Graham]

Looks okay at first glance. Documentation and tests are also required.

[chex]

Update ​PR with tests.

[Tim Graham]

And documentation? Please update the ticket flags when you update the patch. It looks like the tests are testing more than just what's changed. It's fine to increase test coverage but please do it in a separate commit (perhaps a separate PR that precedes this one).

[chex]

Update ​pr with documentation.
Non specific to the ticket tests are moved to another ​pr.