AUTHORS: Add Jakob Mueller.

Signed-off-by: Dumitru Ceara <dceara@redhat.com>

Author: dceara

AUTHORS.rst

@@ -200,6 +200,7 @@ Iman Tabrizian                     tabrizian@outlook.com
 Isaku Yamahata                     yamahata@valinux.co.jp
 Ivan Dyukov                        i.dyukov@samsung.com
 IWASE Yusuke                       iwase.yusuke@gmail.com
+Jakob Mueller                      me@jakobm.de
 Jakub Libosvar                     libosvar@redhat.com
 Jakub Sitnicki                     jsitnicki@gmail.com
 James P.                           roampune@gmail.com