move changelog entry before the real footers

move changelog entry before the real footers

the change-id will be added at the end, which will look just plain
stupid if the other "real" footers come above the changelog.
also, a smart log author would integrate the changelog entry into the
flow of the message, so further up in the template is more natural.

Change-Id: I053840a81ea62f2e0ad1bd133f2e7a2692a6f2d6
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>