Code review comment for ~lofidevops/ols-jenkaas:sn1780-mergebot-dependent-branches

Thanks for the updates David! I had a few questions below. Also as far as testing goes - you could create your own repo, similar to what I did for pre-merge CI:https://code.launchpad.net/~ubuntuone-hackers/golem/+git/golem-tests. Or just use that one honestly. But you can use that to create some MPs with dependencies and test it out with lp-shell.