Set `matrix-client-hydrogen` to `hydrogen_identifier`

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

docs/configuring-playbook-client-hydrogen.md

@@ -70,4 +70,4 @@ The shortcut commands with the [`just` program](just.md) are also available: `ju
 
 ## Troubleshooting
 
-As with all other services, you can find the logs in [systemd-journald](https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html) by logging in to the server with SSH and running `journalctl -fu hydrogen`.
+As with all other services, you can find the logs in [systemd-journald](https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html) by logging in to the server with SSH and running `journalctl -fu matrix-client-hydrogen`.

group_vars/matrix_servers

@@ -357,7 +357,7 @@ devture_systemd_service_manager_services_list_auto: |
     +
     ([{'name': 'matrix-client-element.service', 'priority': 2000, 'groups': ['matrix', 'clients', 'element', 'client-element']}] if matrix_client_element_enabled else [])
     +
-    ([{'name': 'hydrogen.service', 'priority': 2000, 'groups': ['matrix', 'clients', 'hydrogen', 'client-hydrogen']}] if hydrogen_enabled else [])
+    ([{'name': (hydrogen_identifier + '.service'), 'priority': 2000, 'groups': ['matrix', 'clients', 'hydrogen', 'client-hydrogen']}] if hydrogen_enabled else [])
     +
     ([{'name': 'matrix-client-schildichat.service', 'priority': 2000, 'groups': ['matrix', 'clients', 'schildichat', 'client-schildichat']}] if matrix_client_schildichat_enabled else [])
     +
@@ -4130,6 +4130,8 @@ matrix_client_element_element_call_url: "{{ matrix_element_call_public_url if ma
 
 hydrogen_enabled: false
 
+hydrogen_identifier: matrix-client-hydrogen
+
 hydrogen_docker_image_registry_prefix_upstream: "{{ matrix_container_global_registry_prefix_override if matrix_container_global_registry_prefix_override else hydrogen_docker_image_registry_prefix_upstream_default }}"
 
 hydrogen_container_image_self_build: "{{ matrix_architecture not in ['arm64', 'amd64'] }}"