Release v0.22

[kevinbache]

This change is 

[Ark-kun]

The chosen commit has sample-test failing.

I've looked at the subsequent commits and the sample test is successful, so it's probably be OK to use that commit, but the situation deviates from the release doc.

[Ark-kun]

/test kubeflow-pipeline-sample-test

[Ark-kun]

/lgtm
/approve

[Ark-kun]

/cc @hongye-sun Do you think we need to change the version of the component_sdk library every release?

[hongye-sun]

@Ark-kun, let's continue the process for now.

@kevinbache, are you still working on the release of v0.1.22? I am also working on the new release for this week? Do you think we can sync and only publish a single release this week?

[hongye-sun]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Ark-kun, hongye-sun

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