Add John as Maintainer
Add John as Maintainer

Add myself as a maintainer and add a change approval rule:

wait for 24 hours before doing the final submit, after +2 on a commit

Signed-off-by: John Wang <f94ba6c7f9f751e26d9bd16a9d1e9a602cdeac6b@inspur.com>
Change-Id: I3a1fee8df31d5b24c8a44f1f1a2ccabf6b0dc756

openbmc/pldm,openbmc/pldm,openbmc/pldm