Add some helper synapse cleanup scripts

ansible/roles/docker/files/synapse/docker-compose.yml

@@ -30,3 +30,4 @@ services:
       - POSTGRES_PASSWORD=synapse
     volumes:
       - ./postgresql:/var/lib/postgresql/data
+      - ./synapse_scripts:/opt/synapse_scripts:ro

ansible/roles/docker/tasks/synapse.yml

@@ -42,3 +42,9 @@
   loop:
     - absent
     - present
+
+- name: Install helper scripts
+  git:
+    repo: "https://github.com/xwiki-labs/synapse_scripts"
+    dest: /opt/synapse/synapse_scripts
+    force: true