caches: make sure the global cache namespace prefixes are used.

- fixes problems when porting from old RC to new python3 based and different serialization mech

rhodecode/authentication/base.py

@@ -750,7 +750,7 @@ def authenticate(username, password, environ=None, auth_type=None,
         user_id = user.user_id if user else 'no-user'
         # don't cache for empty users
         plugin_cache_active = plugin_cache_active and user_id
-        cache_namespace_uid = f'cache_user_auth.{user_id}'
+        cache_namespace_uid = f'cache_user_auth.{rc_cache.PERMISSIONS_CACHE_VER}.{user_id}'
         region = rc_cache.get_or_create_region('cache_perms', cache_namespace_uid)
 
         @region.conditional_cache_on_arguments(namespace=cache_namespace_uid,

rhodecode/authentication/registry.py

@@ -125,7 +125,7 @@ class AuthenticationPluginRegistry(object):
 
     @classmethod
     def get_cache_region(cls):
-        cache_namespace_uid = 'auth_plugins'
+        cache_namespace_uid = 'auth_plugins.v1'
         region = rc_cache.get_or_create_region('cache_general', cache_namespace_uid)
         return region, cache_namespace_uid