[Automation] - Adding real cluster support for Imported Generic tests

[izaac]

Summary

Fixes #
Adds support for using a real cluster during imported cluster tests.

Occurred changes and/or fixed issues

Updating the init.sh script to use a k3s cluster package to create a single node cluster. The information is then stored in the corral configuration for later use.

Technical notes summary

After creating the cluster the updates to the corral package will allow the imported cluster create test to use it.

Both PRs depend on each other.
#10726

Areas or cases that should be tested

Jenkins pipeline

Checklist

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• The PR has been self reviewed
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• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
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[yonasberhe23]

LGTM

[izaac]

Rebased and the Jenkinsfile is updated to delete the new resource.