Add persistent Redis data store and copy over Druid config to production

docker-compose.yml

@@ -320,6 +320,7 @@ services:
          hard: 65535
     volumes:
       - ${PORTAINER_GIT_DIR}/docker/redis.conf:/etc/redis.conf
+      - redis_data:/data
     volumes_from:
       - tmp
     healthcheck:
@@ -338,8 +339,9 @@ volumes:
     external: false
   db_home:
     external: false
-  redis:
+  redis_superset:
     external: false
+  redis_data: {}
   metadata_data: {}
   middle_var: {}
   historical_var: {}