[Merge] lp:~pwlars/ubuntu-test-cases/server-fix-ttyS0 into lp:ubuntu-test-cases/server

[Francis Ginther]

Review: Approve

This is consistent with the fix we were discussing. Looks good.
-- 
https://code.launchpad.net/~pwlars/ubuntu-test-cases/server-fix-ttyS0/+merge/256978
Your team Ubuntu Server Developers is requested to review the proposed merge of lp:~pwlars/ubuntu-test-cases/server-fix-ttyS0 into lp:ubuntu-test-cases/server.