[tests/repository] use the new connection api (part 2/2)
Some notes:
* module imports cleanup
* the unimplemented `test_transaction_interleaved` is wiped
#! /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