Partially reverts 0a6b934a44.

`preferred_domain` is only used by Element and does not apply to the
`/.well-known/matrix/client` file.

Related to: https://matrix.org/blog/2023/07/bridges-security-updates/

Related to: https://matrix.org/blog/2023/07/bridges-security-updates/

Related to https://matrix.org/blog/2023/07/bridges-security-updates/

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2375#issuecomment-1656064975

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2375#issuecomment-1655758296

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2375#issuecomment-1655758296

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2791

* Adjust to new mrb docker versioning

* Stabilze authentication

* fix lint

* Move & document mrb password usage

* Add clean cache role

* Document clean cache

* Fix lint

* Update CHANGELOG.md

* Automate access tokens

* Improve changelog

* Make use of mrb's function to fetch API tokens

* Adjust changelog

* Use ansible.builtin.file to clear directory

* Fix typo

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* intial commit

* changed

* Reorderd

* merge old changes

* added changes to matrix_servers

* Remove duplicate discord

* Update main.yml

* added google message to configuring-playbook.md

* Changed docs to add new changes

* Changed bug?

* Removed problem j2 values

* Rename a service files

* change how password hash string

* Changed port number

* Change how the local part works

* Revert "Merge pull request #8 from shreyasajj/wsproxy"

This reverts commit bb1b8fc67ca39f63ca77e70077be99cb2b32c4de, reversing
changes made to cce6ba5f9d.

---------

Co-authored-by: Shreyas Ajjarapu <github.tzarina@aleeas.com>

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

Related to:
- e4f545c452
- 2481b7dfa4

We've prepared for this by adding the `main` process to the `instance_map` a long time ago,
in 49cb8b7b11.

Related to 0f02f0b4da