containerd integration: give containerd more time
containerd integration: give containerd more time

100 ms * 10 tries = 1 second, which will result in flakiness if the
worker is under load and things are just a bit slower.

10 seconds ought to be enough for anyone.

Signed-off-by: Alex Suraci <a8053324ea51f0cc533cfe7b17f8bee3c920919f@pivotal.io>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse