Fix customer test scripts

[mossmana]

While addressing #8820, it was discovered that a few other bash scripts had incorrect license header placement as well.

Pre-launch Checklist

• I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
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• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or there is a reason for not adding tests.