Add matrix-registration support

roles/matrix-registration/templates/config.yaml.j2

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+server_location: {{ matrix_registration_server_location|to_json }}
+server_name: {{ matrix_registration_server_name|to_json }}
+shared_secret: {{ matrix_registration_shared_secret|to_json }}
+admin_secret: {{ matrix_registration_admin_secret|to_json }}
+riot_instance: {{ matrix_registration_riot_instance|to_json }}
+db: 'sqlite:////data/db.sqlite3'
+host: '0.0.0.0'
+port: 5000
+rate_limit: ["100 per day", "10 per minute"]
+allow_cors: false
+logging:
+  disable_existing_loggers: False
+  version: 1
+  root:
+    level: DEBUG
+    handlers: [console]
+  formatters:
+    brief:
+      format: '%(name)s - %(levelname)s - %(message)s'
+    precise:
+      format: '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
+  handlers:
+    console:
+      class: logging.StreamHandler
+      level: INFO
+      formatter: brief
+      stream: ext://sys.stdout
+# password requirements
+password:
+  min_length: 8

roles/matrix-registration/templates/systemd/matrix-registration.service.j2

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+#jinja2: lstrip_blocks: "True"
+[Unit]
+Description=matrix-registration
+{% for service in matrix_registration_systemd_required_services_list %}
+Requires={{ service }}
+After={{ service }}
+{% endfor %}
+{% for service in matrix_registration_systemd_wanted_services_list %}
+Wants={{ service }}
+{% endfor %}
+
+[Service]
+Type=simple
+ExecStartPre=-{{ matrix_host_command_docker }} kill matrix-registration
+ExecStartPre=-{{ matrix_host_command_docker }} rm matrix-registration
+
+ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-registration \
+			--log-driver=none \
+			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
+			--cap-drop=ALL \
+			--network={{ matrix_docker_network }} \
+			{% if matrix_registration_container_http_host_bind_port %}
+			-p {{ matrix_registration_container_http_host_bind_port }}:5000 \
+			{% endif %}
+			-v {{ matrix_registration_config_path }}:/config:ro \
+			-v {{ matrix_registration_data_path }}:/data \
+			{% for arg in matrix_registration_container_extra_arguments %}
+			{{ arg }} \
+			{% endfor %}
+			{{ matrix_registration_docker_image }} \
+			serve
+
+ExecStop=-{{ matrix_host_command_docker }} kill matrix-registration
+ExecStop=-{{ matrix_host_command_docker }} rm matrix-registration
+Restart=always
+RestartSec=30
+SyslogIdentifier=matrix-registration
+
+[Install]
+WantedBy=multi-user.target