Migrate the remaining bots in EC2 to Google Compute Engine
https://bugs.webkit.org/show_bug.cgi?id=106005

Patch by Alan Cutter <alancutter@chromium.org> on 2013-01-12
Reviewed by Eric Seidel.

Updated bot scripts for launching feeder-queue, style-queue and sheriffbot on GCE.

* EWSTools/GoogleComputeEngine/build-feeder-style-sheriffbot.sh: Copied from Tools/EWSTools/build-repo.sh.
* EWSTools/boot.sh:
* EWSTools/build-repo.sh:
* EWSTools/start-queue.sh:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@139552 268f45cc-cd09-0410-ab3c-d52691b4dbfc