[devtools] set .config in setUpClass instead of using a cache in a classproperty
This is much clearer and avoid problem with py.test introspection that triggered
creation and caching of the configuration before actual test execution. This
caused pb in unittest_postgres.PostgresStatementTimeoutTC where configuration
was built before module's setup, hence source configuration was missing
information about where to find the pg cluster.
#! /bin/sh -e
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl restart || true
fi
#DEBHELPER#
exit 0