Add Nasser Grainawi as Gerrit maintainer

Nasser has been elected as new Gerrit maintainer [1], hence adding him
to the maintainers list.

[1] https://groups.google.com/g/repo-discuss/c/9_eCNayM8b4/m/C9Qha0X8CAAJ

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I20a61f55fb3a99e7490a9ea1e916fb82f56921b6
1 file changed