[Merge] lp:~azzar1/software-properties/fix-1764474 into lp:software-properties

[Sebastien Bacher]

Thanks, I'm unsure the migration code was needing since that code was never on a stable serie but I guess it's nice for the users who tested on bionic and it's there so let's include it
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https://code.launchpad.net/~azzar1/software-properties/fix-1764474/+merge/343429
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~azzar1/software-properties/fix-1764474 into lp:software-properties.