refactor: tool-postgres test

Author: axonasif

tests/tool-postgresql.yaml

@@ -6,7 +6,7 @@
   - stdout.indexOf("(PostgreSQL) 12") != -1
 - desc: it should serve postgres
   entrypoint: [bash, -i, -c]
-  command: [until pg_ctl status; do sleep 1; done && psql -l]
+  command: [sleep 5; psql -l]
   assert:
   - stdout.indexOf("List of databases") != -1
   - status == 0