Replace `synapse_admin_contact` with `matrix_synapse_adminContact`

`synapse_admin_` is reserved for Synapse Admin

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

roles/custom/matrix-synapse/defaults/main.yml

@@ -425,7 +425,7 @@ matrix_synapse_form_secret: "{{ matrix_synapse_macaroon_secret_key }}"
 
 
 # Controls how to reach server admin, used in ResouceLimitError
-synapse_admin_contact: ~
+matrix_synapse_adminContact: ~  # noqa var-naming
 
 matrix_synapse_max_upload_size_mb: 50
 

roles/custom/matrix-synapse/templates/synapse/homeserver.yaml.j2

@@ -391,7 +391,7 @@ manhole_settings:
 
 # How to reach the server admin, used in ResourceLimitError
 #
-admin_contact: {{ synapse_admin_contact | to_json }}
+admin_contact: {{ matrix_synapse_adminContact | to_json }}
 
 # Global blocking
 #

roles/custom/matrix_playbook_migration/tasks/validate_config.yml

@@ -107,6 +107,7 @@
     - {'old': 'synapse_admin_public_endpoint', 'new': 'synapse_admin_path_prefix'}
     - {'old': 'synapse_admin_nginx_proxy_integration_enabled', 'new': '<removed>'}
     - {'old': 'synapse_admin_docker_image_name_prefix', 'new': 'synapse_admin_container_image_registry_prefix'}
+    - {'old': 'matrix_synapse_admin_contact', 'new': 'matrix_synapse_adminContact'}
 
 - name: (Deprecation) Catch and report matrix_postgres variables
   ansible.builtin.fail: