[packaking] get rid off .yaml

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
[packaking] Add fail safe to post scripts

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
No restart on update

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
Merge pull request #181 from plundstr/master

Packaging fixes