WIP of #176

* matrix-backup-borg: added option for unencrypted repo access

* matrix-backup-borg: fixed requiring password for unencrypted repos; changed variable name

* matrix-backup-borg: add unknown_unencrypted_repo_access_is_ok to config.yaml.j2

* matrix-backup-borg: cleanup comments

* matrix-backup-borg: add documentation regarding unencrypted repos

* matrix-backup-borg: add readability and ease of use to code

* matrix-backup-borg: fix wording in defaults/main.yml comment

* matrix-backup-borg: add quotes to docs

* Indicate the variable to use

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

Increase the async timeout value defaults, as larger Matrix servers need more time to complete.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1749

This update brings stable threads support

Tested, works without any configuration changes.

https://github.com/matrix-org/matrix-hookshot/releases/tag/1.4.0

We no longer validate that there's an IP address defined.
Seems like Coturn can start without one as well, so there's no need to
require it.

If people populate `matrix_coturn_turn_external_ip_addresses` directly
to specify multiple addresses, they can leave
`matrix_coturn_turn_external_ip_address` empty.

We use the "select not equal to empty string" thing in the for loop
to avoid `matrix_coturn_turn_external_ip_address` leading to
`matrix_coturn_turn_external_ip_addresses: ['']` leading to
`external-ip=` in the Coturn configuration.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1741

People often report and ask about these "failures".
More-so previously, when the `docker kill/rm` output was collected,
but it still happens now when people do `systemctl status
matrix-something` and notice that it says "FAILURE".

Suppressing to avoid further time being wasted on saying "this is
expected".

Add support for multiple external turn IP addresses, this allows for better comptability with dualstack ipv4/ipv6 hosts, and is supported as per the documentation (point 6 here: https://matrix-org.github.io/synapse/latest/turn-howto.html#configuration)

* add borg backup

* lint fix

* add exlclude patterns

* missed in the #1726 fix for honoroit

* feedback

* Fix indentation

* feedback

* feedback

* feedback

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

This reverts commit 0103d92df4.

The same fix has now been merged upstream
(https://gitlab.com/beeper/mx-puppet-monorepo/-/merge_requests/35), so
we don't need to use a fork anymore.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1719

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1719

We're using a pinned commit of this fork, which patches up the npm/yarn
lock files, so that self-building of the Discord and Slack bridges can
work after GitHub's deprecation of the `git://` and `ssh://` protocols
(https://github.blog/2021-09-01-improving-git-protocol-security-github/).

When the issue gets fixed in the Beeper fork (via
https://gitlab.com/beeper/mx-puppet-monorepo/-/merge_requests/35 or
otherwise), we'll get back on it.

This switches the playbook from devture/rust-synapse-compress-state (a
container image which wraps the upstream-prebuilt amd64 binary of
rust-synapse-compress-state) to registry.gitlab.com/mb-saces/rust-synapse-compress-state
(https://gitlab.com/mb-saces/rust-synapse-compress-state), which builds
rust-synapse-compress-state from source and provides a multi-arch image
that currently works on amd64 and arm64.

Ideally, we'll stop using `:latest` and arm32 support will be made
available upstream as well at some point.
Discussed here: https://gitlab.com/mb-saces/rust-synapse-compress-state/-/issues/1

This makes it easier to use another container image for
rust-synapse-compress-state, which may be storing the binary at another
path.