Made rewrite.py aware of the transcoded zone.

Change-Id: Ie4a10b7bd54e0564e33adcef7ab4bca0dbeca893
Updated the sharded containers list (added transcoded zone).

* TODO: make this work by looking at (site,lang) prefix instead
  of a per-container list.

Change-Id: Ia50acd7f125c293a138401d110eb59c1a502ef06
Merge "Updated the sharded containers list (added transcoded zone)." into production
Merge "Made rewrite.py aware of the transcoded zone." into production