[Merge] lp:~artmello/ubuntu-push/ubuntu-push-settings_notifications into lp:ubuntu-push/automatic

[Arthur Mello]

This is a workaround since during package install packagekit seems to clear env. The wrapper was added to reset it. Same approach is used on content-hub click hook.
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https://code.launchpad.net/~artmello/ubuntu-push/ubuntu-push-settings_notifications/+merge/296335
Your team Ubuntu Push Hackers is requested to review the proposed merge of lp:~artmello/ubuntu-push/ubuntu-push-settings_notifications into lp:ubuntu-push/automatic.