[release/1.4] Fix cleanup context of teardownPodNetwork

[adisky]

Cherry pick from commit

Co-authored-by: Quan Tian qtian@vmware.com

Signed-off-by: Aditi Sharma adi.sky17@gmail.com

[k8s-ci-robot]

Hi @adisky. Thanks for your PR.

I'm waiting for a containerd member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[adisky]

cc @dims

[dims]

LGTM

[Zyqsempai]

LG

[xh4n3]

@fuweid Hi~ do we have a plan for containerd 1.4.7 include this fix?

[fuweid]

@xh4n3 Sure, we do have plan, but we need to update vendor first. :)