Implemented vars, tasks and templates for central database setup until mastodon role

roles/docker-nextcloud/templates/docker-compose.yml.j2

@@ -17,7 +17,7 @@ services:
     depends_on:
       - database
 
-{% include 'templates/docker-mariadb-service.yml.j2' %}
+{% include 'templates/docker-{{ database_type }}-service.yml.j2' %}
 {% endif %}
 
   web:
@@ -44,17 +44,9 @@ services:
     volumes:
       - data:/var/www/html
     entrypoint: /cron.sh
-    depends_on:
-{% if not enable_central_database %}
-      - database
-{% endif %}
-      - redis
+{% include 'templates/docker-depends-on-central-database.yml.j2' %}
+      redis:
 volumes:
-{% if not enable_central_database %}
-  database:
-{% endif %}
+{% include 'templates/docker-database-volume.yml.j2' %}
   data:
   redis:
-networks:
-  default:
-    driver: bridge