Inspect containerd version and switch config version accordingly

[shysank]

This pr inspects containerd version and switches b/w v1 and v2 config spec accordingly. Fixes #143

[cloud-native-bot]

Hello There!

Thanks for your contribution!
This repository is a read-only mirror of the following repository: https://gitlab.com/nvidia/container-toolkit/container-config

Do you mind:

• Opening a pull request against that repo?
• Making sure your work is signed: https://help.github.com/en/github/authenticating-to-github/signing-commits

Thanks again!

[shysank]

Lots of vendor files added because I've added containerd as a dependency to query for the version. We can avoid by using ctr version to inspect version. However, this means we have an added dependency on ctr to be present in the node, and the tests were failing too. Happy to switch it to ctr version if we're okay with it. wdyt?

/cc @klueska

[shysank]

Logs from testing:

time="2021-02-17T17:34:38Z" level=info msg="Setting up runtime"
time="2021-02-17T17:34:38Z" level=info msg="Starting 'setup' for containerd"
time="2021-02-17T17:34:38Z" level=info msg="Parsing arguments: [/usr/local/nvidia/toolkit]"
time="2021-02-17T17:34:38Z" level=info msg="Successfully parsed arguments"
time="2021-02-17T17:34:38Z" level=info msg="Loading config: //run/docker/containerd/containerd.toml"
time="2021-02-17T17:34:38Z" level=info msg="Successfully loaded config"
time="2021-02-17T17:34:38Z" level=info msg="version not present in config"
time="2021-02-17T17:34:38Z" level=info msg="containerd version is v1.3.9"
time="2021-02-17T17:34:38Z" level=info msg="Updating config"
time="2021-02-17T17:34:38Z" level=info msg="Updating V2 config"
time="2021-02-17T17:34:38Z" level=info msg="Successfully updated config"
time="2021-02-17T17:34:38Z" level=info msg="Flushing config"
time="2021-02-17T17:34:38Z" level=info msg="Successfully flushed config"
time="2021-02-17T17:34:38Z" level=info msg="Sending SIGHUP signal to containerd"
time="2021-02-17T17:34:38Z" level=info msg="Successfully signaled containerd"
time="2021-02-17T17:34:38Z" level=info msg="Completed 'setup' for containerd"
time="2021-02-17T17:34:38Z" level=info msg="Shutting Down"
time="2021-02-17T17:34:38Z" level=info msg="Completed nvidia-toolkit"

[klueska]

As the comment above suggests, we do development on gitlab, not github. Please open an MR there.

[shysank]

closing this in favor of https://gitlab.com/nvidia/container-toolkit/container-config/-/merge_requests/63