Bugfix/fix aws postgres endpoint (#1933)

* do not constrain the endpoint

Author: sanderegg

packages/models-library/src/models_library/settings/postgres.py

@@ -6,8 +6,6 @@
 
 
 class PostgresSettings(BaseSettings):
-    dns: Optional[PostgresDsn] = None
-
     # entrypoint
     host: str
     port: PortInt = 5432

services/web/server/src/simcore_service_webserver/db_config.py

@@ -7,7 +7,7 @@
 
 import trafaret as T
 from aiohttp.web import Application
-from pydantic import BaseSettings, constr
+from pydantic import BaseSettings
 from typing import Optional
 
 from models_library.settings.postgres import PostgresSettings
@@ -25,7 +25,7 @@
 
 
 class PgSettings(PostgresSettings):
-    endpoint: Optional[constr(strip_whitespace=True, regex=r"\w+:\d+")] = None
+    endpoint: Optional[str] = None  # TODO: PC remove or deprecate that one
 
     class Config:
         fields = {"db": "database"}