Run hack/generate-authors.sh

Docker-DCO-1.1-Signed-off-by: Peter Waller <p@pwaller.net> (github: pwaller)
Change Peter Waller's canonical e-mail address

Docker-DCO-1.1-Signed-off-by: Peter Waller <p@pwaller.net> (github: pwaller)
Add a few canonicalized author names

Docker-DCO-1.1-Signed-off-by: Peter Waller <p@pwaller.net> (github: pwaller)
Regenerate AUTHORS one more time

Signed-off-by: Andrew Page <admwiggin@gmail.com>
Merge pull request #7473 from tianon/pwaller-authors

Update .mailmap with a few more addresses