[server] fix deserialize_schema to handle properly pg schema (closes 17076486) Postgres behaviour is to look first for a table in the configured schema then fall back to 'public' if no table is found. This must be implemented in deserialize_schema when listing existing tables to check for computed relations (cw_cwcomputedrtype) otherwise computed relations may not work when using non-default pg schema.

#!/usr/bin/env python
from cubicweb.cwctl import run
import sys
run(sys.argv[1:])