authors: Update authors list with my new email.

Signed-off-by: Ethan J. Jackson <ejj@eecs.berkeley.edu>
Acked-by: Justin Pettit <jpettit@nicira.com>

AUTHORS

@@ -61,7 +61,7 @@ Edward Tomasz Napierała trasz@freebsd.org
 Eitan Eliahu            eliahue@vmware.com
 Eohyung Lee             liquidnuker@gmail.com
 Eric Sesterhenn         eric.sesterhenn@lsexperts.de
-Ethan Jackson           ethan@nicira.com
+Ethan J. Jackson        ejj@eecs.berkeley.edu
 Flavio Leitner          fbl@redhat.com
 Francesco Fusco         ffusco@redhat.com
 FUJITA Tomonori         fujita.tomonori@lab.ntt.co.jp