[Merge] lp:~mterry/update-notifier/pkexec into lp:update-notifier

[Colin Watson]

While you're right that the Depends is technically in the wrong place, in practice lots of the relevant images have update-notifier installed as well as update-notifier-common, thereby causing cddistupgrader to work.  Do you think you could allay any regression concerns by implementing my suggestion for cddistupgrader?

The backend_helper change indeed looks better now.
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https://code.launchpad.net/~mterry/update-notifier/pkexec/+merge/146003
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~mterry/update-notifier/pkexec into lp:update-notifier.