[Merge] lp:~jamesodhunt/upstart/bug-1089159 into lp:upstart

[Dmitrijs Ledkovs]

Review: Approve

Well, a similar sleep did solve the often accruing race. Let's throw the rest of them onto jenkins and see if that helps.
My machine cannot reproduce the failure with or without this patch.
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https://code.launchpad.net/~jamesodhunt/upstart/bug-1089159/+merge/189032
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