Add myself to AUTHORS list.

NOTRY=true

Review URL: https://codereview.chromium.org/574623002

Cr-Commit-Position: refs/heads/master@{#295027}

AUTHORS

@@ -52,6 +52,7 @@ Arun Kulkarni <kulkarni.a@samsung.com>
 Arun Mankuzhi <arun.m@samsung.com>
 Arunoday Sarkar <a.sarkar.arun@gmail.com>
 Arunprasad Rajkumar <ararunprasad@gmail.com>
+Arunprasad Rajkumar <arurajku@cisco.com>
 Attila Dusnoki <dati91@gmail.com>
 Avinaash Doreswamy <avi.nitk@samsung.com>
 Balazs Kelemen <b.kelemen@samsung.com>