Ubuntu doesn't support upgrade paths that skip LTS releases. So, ignoring EOL releases, we only need to consider Trusty->Xenial, Xenial->Bionic, Bionic->Cosmic and Cosmic->Disco. Does that save us a whole bunch of work? If only upgrading from 1.12 is affected, then from Ubuntu is Trusty->Xenial the only upgrade path affected? If so, is it just Xenial that we need to fix?
Thanks Clark and Sam.
Ubuntu doesn't support upgrade paths that skip LTS releases. So, ignoring EOL releases, we only need to consider Trusty->Xenial, Xenial->Bionic, Bionic->Cosmic and Cosmic->Disco. Does that save us a whole bunch of work? If only upgrading from 1.12 is affected, then from Ubuntu is Trusty->Xenial the only upgrade path affected? If so, is it just Xenial that we need to fix?