Lei Jitang 44d9263f75 Probably fix flaky test TestExecTTY
sleep 2 seconds before exec exit to make sure
the output of `cat /foo` will be read

Signed-off-by: Lei Jitang <leijitang@huawei.com>
Upstream-commit: 0e16eacad44f1485d6857a61e2e7690e0a37ddec
Component: engine
2015-12-10 04:13:58 -05:00
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