Add list of contributors
Add list of contributors

This was produced by looking at all the git sign-offs, and matching
where necessary with Gerrit identities.

Change-Id: Ifc3abee21dad9a13415c8902aadffd043603ae00
Signed-off-by: Stephen Kitt <c64219c0e25aff6572376b1dfbf7cf444494f5c6@redhat.com>

opendaylight/ovsdb,opendaylight/ovsdb,opendaylight/ovsdb