[test] update unittest_repoapi to 3.19 api (sic)
[jcr: while at it, fix typos and add missing __main__ section]
#! /bin/sh -e#if [ "$1" = configure ]; then if which install-docs >/dev/null 2>&1; then install-docs -i /usr/share/doc-base/cubicweb-doc fifi#DEBHELPER#exit 0