Fixes #31060 - drop Environments migrations

Drops all migrations related to environments.
Removes all the relations to the environments.
Adds a migration to drop environments from Hostgroup and Host.

Extracted in https://github.com/theforeman/foreman_puppet_enc/pull/41.

Fixes #33541 - drop puppetclass migrations

Removes all migrations related to Puppetclass.

Added in plugin https://github.com/theforeman/foreman_puppet/pull/195

Fixes #31096 - remove config group migrations

These migrations had been added to the plugin foreman_puppet_enc.
Details of addition https://github.com/theforeman/foreman_puppet_enc/pull/13

Fixes #31732 - drop env from TemplateCombination migration

Drop environment relation from TemplateCombination migrations.

Fixes #32652 - task to purge puppet data

Adds rake task to purge all puppet data for users who do not choose to use puppet.

Fixes #14854 - connection libvirt leak fixed

Fixes #32893 - use setting DSL for General category

This uses our new DSL to define the General settings, this showcases how
to use the new DSL and other categories should follow in the same
release.

Fixes #32837 - drop unwanted URI parsing from extension

Fixes #33223 - Improving Job Invocation Report Template

Updating the template to merge outputs lines to one batch to show them
at one line.

Fixes #33180 - add task to migrate Puppet info

Adds task to migrate Puppet provisioning info to Host parameters.