Move roles/matrix* to roles/custom/matrix*

This paves the way for installing other roles into `roles/galaxy` using `ansible-galaxy`,
similar to how it's done in:

- https://github.com/spantaleev/gitea-docker-ansible-deploy
- https://github.com/spantaleev/nextcloud-docker-ansible-deploy

In the near future, we'll be removing a lot of the shared role code from here
and using upstream roles for it. Some of the core `matrix-*` roles have
already been extracted out into other reusable roles:

- https://github.com/devture/com.devture.ansible.role.postgres
- https://github.com/devture/com.devture.ansible.role.systemd_docker_base
- https://github.com/devture/com.devture.ansible.role.timesync
- https://github.com/devture/com.devture.ansible.role.vars_preserver
- https://github.com/devture/com.devture.ansible.role.playbook_runtime_messages
- https://github.com/devture/com.devture.ansible.role.playbook_help

We just need to migrate to those.

roles/custom/matrix-conduit/templates/conduit/conduit.toml.j2

@@ -0,0 +1,55 @@
+# =============================================================================
+#  This is the official example config for Conduit.
+#  If you use it for your server, you will need to adjust it to your own needs.
+#  At the very least, change the server_name field!
+# =============================================================================
+
+
+[global]
+# The server_name is the pretty name of this server. It is used as a suffix for user
+# and room ids. Examples: matrix.org, conduit.rs
+
+# The Conduit server needs all /_matrix/ requests to be reachable at
+# https://your.server.name/ on port 443 (client-server) and 8448 (federation).
+
+# If that's not possible for you, you can create /.well-known files to redirect
+# requests. See
+# https://matrix.org/docs/spec/client_server/latest#get-well-known-matrix-client
+# and
+# https://matrix.org/docs/spec/server_server/r0.1.4#get-well-known-matrix-server
+# for more information
+
+server_name = "{{ matrix_domain }}"
+
+# This is the only directory where Conduit will save its data
+database_path = "/var/lib/matrix-conduit/"
+database_backend = "rocksdb"
+
+# The port Conduit will be running on. You need to set up a reverse proxy in
+# your web server (e.g. apache or nginx), so all requests to /_matrix on port
+# 443 and 8448 will be forwarded to the Conduit instance running on this port
+# Docker users: Don't change this, you'll need to map an external port to this.
+port = {{ matrix_conduit_port_number }}
+
+# Max size for uploads
+max_request_size = {{ matrix_conduit_max_request_size }}
+
+# Max number of open files for the RocksDB database
+rocksdb_max_open_files = {{ matrix_conduit_rocksdb_max_open_files }}
+
+# Enables registration. If set to false, no users can register on this server.
+allow_registration = {{ matrix_conduit_allow_registration | to_json }}
+
+allow_federation = {{ matrix_conduit_allow_federation | to_json }}
+
+# Enable the display name lightning bolt on registration.
+enable_lightning_bolt = {{ matrix_conduit_enable_lightning_bolt | to_json }}
+
+trusted_servers = {{ matrix_conduit_trusted_servers | to_json }}
+
+max_concurrent_requests = {{ matrix_conduit_max_concurrent_requests }}
+
+log = "info,state_res=warn,rocket=off,_=off,sled=off"
+
+address = "0.0.0.0"
+

roles/custom/matrix-conduit/templates/conduit/systemd/matrix-conduit.service.j2

@@ -0,0 +1,38 @@
+#jinja2: lstrip_blocks: "True"
+[Unit]
+Description=Conduit Matrix homeserver
+{% for service in matrix_conduit_systemd_required_services_list %}
+Requires={{ service }}
+After={{ service }}
+{% endfor %}
+
+[Service]
+Type=simple
+Environment="HOME={{ matrix_systemd_unit_home_path }}"
+ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-conduit 2>/dev/null || true'
+ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-conduit 2>/dev/null || true'
+
+ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-conduit \
+			--log-driver=none \
+			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
+			--cap-drop=ALL \
+			--read-only \
+			--tmpfs=/tmp:rw,noexec,nosuid,size={{ matrix_conduit_tmp_directory_size_mb }}m \
+			--network={{ matrix_docker_network }} \
+			--env CONDUIT_CONFIG=/etc/matrix-conduit/conduit.toml \
+			--mount type=bind,src={{ matrix_conduit_data_path }},dst=/var/lib/matrix-conduit \
+			--mount type=bind,src={{ matrix_conduit_config_path }},dst=/etc/matrix-conduit,ro \
+			{% for arg in matrix_conduit_container_extra_arguments %}
+			{{ arg }} \
+			{% endfor %}
+			{{ matrix_conduit_docker_image }}
+
+ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-conduit 2>/dev/null || true'
+ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-conduit 2>/dev/null || true'
+ExecReload={{ matrix_host_command_docker }} exec matrix-conduit /bin/sh -c 'kill -HUP 1'
+Restart=always
+RestartSec=30
+SyslogIdentifier=matrix-conduit
+
+[Install]
+WantedBy=multi-user.target