Ignore error on enabling TCP early demux for old kernels #1243
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(cherry picked from commit a6b0d46)
What type of PR is this?
Cherry pick
Which issue does this PR fix:
#1241
What does this PR do / Why do we need it:
Support kernels older than 4.6, details in #1242
Testing done on this change:
Manual test on CentOS instance
Automation added to e2e:
e2e tests run https://github.com/aws/amazon-vpc-cni-k8s/runs/1194745267?check_suite_focus=true
Will this break upgrades or downgrades. Has updating a running cluster been tested?:
No
Does this change require updates to the CNI daemonset config files to work?:
No
Does this PR introduce any user-facing change?:
No
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.