LU-930 misc: update .mailmap to fix bad commits

LU-930 misc: update .mailmap to fix bad commits

Fix the .mailmap file to fix the attribution of a few commits
that used the wrong authorship.

Test-Parameters: trivial
Build-Parameters: distro=el9.3 arch=x86_64
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Idd45f46fcefa7d9aaa9e2b6a63ccaa1b233ebbe5
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57008
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: Colin Faber <cfaber@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>