cros_build_lib.run: clean up redirect_std{err,out}->std{err,out} migration

BUG=chromium:1006587
TEST=`./run_tests` passes

Change-Id: I5aa3f8e4c69ce47e1c1c4731800948c22d1ebf1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/1976270
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/cros_sdk.py b/scripts/cros_sdk.py
index 6970dfb..fb0b88d 100644
--- a/scripts/cros_sdk.py
+++ b/scripts/cros_sdk.py
@@ -439,7 +439,7 @@
   ]
   try:
     result = cros_build_lib.run(
-        cmd, print_cmd=False, redirect_stdout=True)
+        cmd, print_cmd=False, stdout=True)
   except cros_build_lib.RunCommandError:
     raise SystemExit('Running %r failed!' % cmd)