refactor(cli): migrate commands to RunE with a single exit funnel#490

Caesarsage wants to merge 4 commits into

microcks:mastermicrocks/microcks-cli:masterfrom

Caesarsage:pr2/runE-single-exit-funnelCaesarsage/microcks-cli:pr2/runE-single-exit-funnelCopy head branch name to clipboard