update community

- add Heri to committers
- add Michael to contributors

Change-Id: If8789adfd897660bc6e2f08a3b4fc17fb1210e37
Reviewed-on: https://asterix-gerrit.ics.uci.edu/668
Reviewed-by: Till Westmann <tillw@apache.org>
Reviewed-by: Ian Maxon <imaxon@apache.org>
4 files changed