[Merge] ~gunnarhj/ubuntu-release-upgrader:temp-font into ubuntu-release-upgrader:ubuntu/main

[Brian Murray]

do-release-upgrade passes some environment variables when starting the upgrade process, that might bear investigating.
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https://code.launchpad.net/~gunnarhj/ubuntu-release-upgrader/+git/ubuntu-release-upgrader/+merge/451815
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~gunnarhj/ubuntu-release-upgrader:temp-font into ubuntu-release-upgrader:ubuntu/main.