[devtools] Set dumb value for postgres's db-host to avoid unexpected connection to a local server Currently, if something goes wrong (eg config built before call to startpgcluster) while a pg server is running on localhost, it may connect to this server and run the test in there unexepectedly.

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