Recent CNI specification changes require the container ID on ADD/DEL, which the testcases were not providing. Fix that up so things work when this repo gets CNI revendored.
git-subtree-dir: pkg git-subtree-mainline: dcf7368eeab15e2affc6256f0bb1e84dd46a34de git-subtree-split: a11be4d7596203874b742b6597caf255204c56c3