Add zeerorg to .DEREK.yml maintainers list.
Add zeerorg to .DEREK.yml maintainers list.

Signed-off-by: Rishabh Gupta<6907c485c7566d80dc320d1f8e42b522d823ff40@outlook.com>

alexellis/faas,alexellis/faas,alexellis/faas,rgee0/faas,rgee0/faas,alexellis/faas,rgee0/faas,rgee0/faas,openfaas/faas,openfaas/faas,alexellis/faas,rgee0/faas,rgee0/faas,rgee0/faas,openfaas/faas,alexellis/faas,alexellis/faas,rgee0/faas,alexellis/faas,alexellis/faas,rgee0/faas,rgee0/faas