Fixes #34234 - do not allow HTTP on SmartProxy Auth

SmartProxyAuth enabled on its endpoints HTTP to log a message, that ssl is required.
This in not necessary and it is hard to keep for the future as Rails 6.1 will make that harder.

There is not too much benefit from this, so it's better to drop it.

Fixes #34236 - Drop require_ssl_smart_proxies setting

This defaults to true and setting it to false can create security
problems. Mandating client SSL certificates creates a more secure
environment.

Previously when require_ssl_smart_proxies was false, reverse DNS was...

Fixes #33697 - Registration - smart proxy features

Registration through smart proxy works only if proxy
have enabled 'Templates' and 'Registration features'.

This fix proxy selection in UI form and generating command via API.

Fixes #32678 - katello_ca_consumer in registration template

Move `rhsm_reconfigure` script from `katello_consumer.rpm` to
`global_registration` template so the `rpm` is not needed anymore

Migrated script is without support of RHEL5 and older
`subscription-manager` versions (0.96 and bellow)

Fixes #33637 - Correctly redirect hostgroup create page

When creating the first hostgroup from the welcome page, submit does not
redirect back to the hostgroups index page due to incorrect referer
being stored in the session `redirect_path` value. This is similar to...

Fixes #33177 - Don't store incorrect referrer for redirect

When the client side uses `history.push` to navigate to a page that is
not managed by react router, the router fallback will navigate to the
new page. However, the browser URL is updated before the actual...

Fixes #32780 - Delete host params when register host

Fixes #33121 - Registration command API & params with false values

Registration API for generating registration command
incorrectly ignores parameters with `false` boolean value.

Refs #31059 - drop environments Host extensions

Removes uses of environment from Host

Refs #31129 - drop Puppetclass from Host(group) API

Extracted in https://github.com/theforeman/foreman_puppet_enc/pull/106