Faily deploy-daily job when precompilation fails

Summary:
If precompilation fails, the build will be slow in production, and we
always re-deploy. This change causes the Jenkins build to fail when the
precompilation stage fails, even though the deployment returned an exit
status of 0.

Test Plan: This config is already live.

Reviewers: csilvers

Reviewed By: csilvers

Differential Revision: http://phabricator.khanacademy.org/D7882