The collect command redirects function logs to the journal for
viewing on journalctl. faas-cli logs is not implemented as of
yet. View logs with journalctl -t openfaas-fn:FN_NAME_HERE.
Tested on Dell XPS with Ubuntu Linux. The approach takes
inspiration from the Stellar project.
Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
