Bug 28386: Adjust .mailmap

Again, we need to adjust our .mailmap
This time the goal is the use it in place of the dev_map.yaml we have in
the release tools.

This will be generated for the release notes, history.txt and
contributors.yaml file

This can be tested using:
  git check-mailmap "author <email>"

For instance:
  git check-mailmap "Wrong name <[email protected]>"

Signed-off-by: Martin Renvoize <[email protected]>

Signed-off-by: Jonathan Druart <[email protected]>