Allow init of redis without registry (useful for external scripts)

src/gisaf/redis_tools.py

@@ -95,13 +95,14 @@ class Store:
     """
     asyncpg_conn: Connection
 
-    async def setup(self):
+    async def setup(self, with_registry=False):
         """
         Setup the live service for the main Gisaf application:
             - Create connection for the publishers
             - Create connection for redis listeners (websocket service)
         """
         await self.create_connections()
+        if with_registry:
             await self.get_live_layer_defs()
 
     async def create_connections(self):
@@ -433,7 +434,7 @@ class Store:
 
 async def setup_redis():
     global store
-    await store.setup()
+    await store.setup(with_registry=True)
 
 
 async def setup_redis_cache():