[test] Avoid pytest discovery warnings
Having TestServerConfiguration and alike in the test module namespace causes
pytest discovery errors, because it thinks it's a test class.
#! /bin/sh -ecase "$1" in remove) if [ -x "/etc/init.d/cubicweb-ctl" ]; then invoke-rc.d cubicweb-ctl stop || true fi ;;esac#DEBHELPER#exit 0