[20.10] vendor: containerd 7cfa023d95d37076d5ab035003d4839f4b6ba791

[thaJeztah]

updates the vendoring from the latest commit of the ambiguous-manifest-moby-20.10
branch in our fork.

- Description for the changelog

- A picture of a cute animal (not mandatory but encouraged)

[samuelkarp]

LGTM

[thaJeztah]

Windows failure is unrelated, and a known flaky test;

=== RUN   TestDockerSuite/TestRunInteractiveWithRestartPolicy
    docker_cli_run_test.go:1797: assertion failed: 
        Command:  d:\CI\PR-43416\1\binary\docker.exe run -i --name test-inter-restart --restart=always busybox sh
        ExitCode: 0
        Stdout:   
        Stderr:   
        
        Failures:
        ExitCode was 0 expected 11
    --- FAIL: TestDockerSuite/TestRunInteractiveWithRestartPolicy (4.55s)