E2E Testing Environment for Kpt Live Tests

[runewake2]

Introduces a workflow that configures a KinD cluster for use with end-to-end.sh and runs those tests against the cluster. An example of the results from this execution is here.

Notes:

• This test is still triggered manually (navigate to Actions, select the workflow and choose to run it).
• This test may never fail. (the test script does not exit with an error so test failures are only displayed in workflow logs)

The intent is to resolve both of these in follow up PR's, in the meantime this will enable new tests to be run in this environment.

This uses https://github.com/engineerd/setup-kind to configure the KinD environment (downloading and installing KinD). I've fixed the action to a specific commit SHA (setup-kind v0.5.0) following GitHub's recommendations.

Related to issue: #1387

[runewake2]

I've added some additional changes that will cause end-to-end-test.sh to exit if a test does not pass. This should allow us to get feedback in these automated tests.

[seans3]

/lgtm

[mortent]

This looks good to me but why not run it on every PR?

[runewake2]

I am running this manually right now to confirm it behaves well, once that's been done checks on pushes to master/next and pulls against those branches will be added. Doing this in stages should help prevent any potential errors from blocking unrelated PR's.