Under certain conditions in the client, the fifo for a container may not
be created. A timeout has been added to this operation to ensure the
shim can recover when the client fails to open the fifos.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Could issues where when exec processes fail the wait block is not
released.
Second, you could not dump stacks if the reaper loop locks up.
Third, the publisher was not waiting on the correct pid.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
