ci: add cluster exclusion list to cleanup

[jmdeal]

Fixes #N/A

Description
Adds an exclusion list to our cleanup script to keep clusters around for investigation purposes. Motivated by ongoing SQS failures in our soak tests.

How was this change tested?
N/A

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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[coveralls]

Pull Request Test Coverage Report for Build 8118419967

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 82.626%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/providers/amifamily/ami.go	1	90.32%

Totals
Change from base Build 8114753237:	-0.02%
Covered Lines:	5255
Relevant Lines:	6360

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💛 - Coveralls

[jonathan-innis]

LGTM 🚀

[engedaam]

LGTM 🚀