AUTHORS: update email for Mark Gray

Update email address for Mark Gray

Signed-off-by: Mark Gray <mark.d.gray@redhat.com>
Signed-off-by: Alin Gabriel Serdean <aserdean@cloudbasesolutions.com>

.mailmap

@@ -54,6 +54,7 @@ Justin Pettit <jpettit@ovn.org> <jpettit@nicira.com>
 Kmindg <kmindg@gmail.com>
 Kyle Mestery <mestery@mestery.com> <kmestery@cisco.com>
 Lance Richardson <lance.richardson@broadcom.com> <lrichard@redhat.com>
+Mark Gray <mark.d.gray@redhat.com> <mark.d.gray@intel.com>
 Mauricio Vasquez <mauricio.vasquez@polito.it> <mauricio.vasquezbernal@studenti.polito.it>
 Miguel Angel Ajo <majopela@redhat.com> <mangelajo@redhat.com>
 Neil McKee <neil.mckee@inmon.com>

AUTHORS.rst

@@ -255,7 +255,7 @@ Madhu Challa                       challa@noironetworks.com
 Manohar K C                        manukc@gmail.com
 Marcin Mirecki                     mmirecki@redhat.com
 Mario Cabrera                      mario.cabrera@hpe.com
-Mark D. Gray                       mark.d.gray@intel.com
+Mark D. Gray                       mark.d.gray@redhat.com
 Mark Hamilton
 Mark Kavanagh                      mark.b.kavanagh81@gmail.com
 Mark Maglana                       mmaglana@gmail.com