[cwctl] allow overriding config settings from the command line (closes #5557656)
eg.
cubicweb-ctl start -p port:8082 myapp
to overload the port parameter defined in the all-in-one.conf file.
#! /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