[testlib] add an default testcase.adminaccess (and use it for default session)
This adminaccess is the new offical way to get connection, and request on a
repo.
#! /bin/sh -e#if [ "$1" = remove -o "$1" = upgrade ]; then if which install-docs >/dev/null 2>&1; then install-docs -r cubicweb-doc fifi#DEBHELPER#exit 0