Doc change: Add temporary redirect for dac/live to dgc/live.

Change-Id: I5a999abb6228f9a2b5d589e6e51176ecf930abe4

Author: ddougherty

scripts/app_engine_server/redirects.yaml

@@ -440,7 +440,10 @@ redirects:
   type: permanent
   comment: Redirect to new location
 
-  
+- src: /live/index.html
+  dst: https://developers.google.com/live/
+  type: permanent
+  comment: Redirect to new location