* Add ability to disable password auth

* Allow disabling password authentication

Related to:

- https://github.com/matrix-org/synapse/pull/15281
- https://github.com/matrix-org/synapse/pull/15282

Related to:

- e55269e14f
- 3d70cc393f
- 4fc85e5a92

Related to:

- 682d31c702
- ecbe0ddbe7
- f4fc83ac75

.. and https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2569

Larger deployments may wish to run migration more often.

Related to https://docs.docker.com/engine/deprecated/#separator--of---security-opt-flag-on-docker-run

Related to https://github.com/matrix-org/synapse/commit/3479599387164aca2613e88d169719

Related to:

- https://github.com/matrix-org/synapse/pull/14551/files
- https://github.com/matrix-org/synapse/pull/14619/files

Signed-off-by: Joe Kappus <joe@wt.gd>

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2330

Without these:

- `--tags=install-synapse` and `--tags=install-all` would be incomplete
and will not contain Synapse worker configuration

- `--tags=install-synapse-reverse-proxy-companion` and
  `--tags=setup-synapse-reverse-proxy-companion` would not contain
  Synapse worker configuration

Related to

- c15e9a0edb
- 01a0527892

Related to 8f10c8b054

It's unnecessary when `pusher_instances` is populated.

Source: 6acb6d772a

It's unnecessary when `federation_sender_instances` is populated.

Source: 6acb6d772a

Synapse Worker configuration updates are coming later.

This path is accessed by the s3 storage provider stuff and needs to be
ensured.

Broken by 7c5c3aedc

We expect `--tags=start` to handle systemd reloading, so we don't need
to do it manually each time we install/uninstall a .service file.