containernetworking / plugins / 1069

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master: 55%

Pull #421

travis-ci

Portmap doesn't fail if chain doesn't exist

It turns out that the portmap plugin is not idempotent if its
executed in parallel.
The errors are caused due to a race of different instantiations
deleting the chains.
This patch does that the portmap plugin doesn't fail if the
errors are because the chain doesn't exist on teardown.

xref: https://github.com/containernetworking/plugins/issues/418

Signed-off-by: Antonio Ojea <antonio.ojea.garcia@gmail.com>

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