Enable AFDO on the Sandybridge and Ivybridge boards.

Enable use of AFDO (afdo_use=True). This optimizes Chrome based on
a profile captured during the Chrome PFQ.
Enabled this on the sandybridge/ivybridge release config and on the
individual release configs for lumpy, stumpy, butterfly, parrot,
parrot_ivb and stout.

BUG=chromium:208146
TEST=Verified the configs look sane in the config_dump.json file.
     Executed tryjobs for {lumpy, butterfly, parrot, stumpy,
     parrot_ivb, stout}-release and for sandybridge-release-group.
     Ran run_tests.

Change-Id: Idcc5fcbb29074ee457048773e6987dd890bf1de8
Reviewed-on: https://chromium-review.googlesource.com/206030
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Tested-by: Luis Lozano <llozano@chromium.org>
Commit-Queue: Luis Lozano <llozano@chromium.org>
diff --git a/scripts/cbuildbot.py b/scripts/cbuildbot.py
index 91fc900..885e40c 100644
--- a/scripts/cbuildbot.py
+++ b/scripts/cbuildbot.py
@@ -497,7 +497,7 @@
 
     if config.build_packages_in_background:
       self._RunStage(build_stages.BuildPackagesStage, board,
-                     builder_run=builder_run)
+                     builder_run=builder_run, afdo_use=config.afdo_use)
 
     if builder_run.config.compilecheck or builder_run.options.compilecheck:
       self._RunStage(test_stages.UnitTestStage, board,