Add natsu@ to cuttlefish_common owners

Also alphabetize owners.

Test: n/a
Change-Id: I7aa6ff4af7a07444dc28a523e429f9b087ca26cf
diff --git a/OWNERS b/OWNERS
index ce92c4f..9594320 100644
--- a/OWNERS
+++ b/OWNERS
@@ -2,6 +2,7 @@
 ghartman@google.com
 jemoreira@google.com
 malchev@google.com
-schuffelen@google.com
 muntsinger@google.com
+natsu@google.com
 rammuthiah@google.com
+schuffelen@google.com