Add a timestamp of the start of the test run to the test suite script.

[brugger1]

Description

I enhanced the regression suite script to timestamp the start of the execution of the batch job so that issues with jobs not getting started in a timely fashion can be tracked.

Type of change

• [X] New feature~~

How Has This Been Tested?

I reviewed the one line change it looks good.

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Checklist:

• [ ] I have commented my code where applicable.
• [ ] I have updated the release notes.
• [ ] I have made corresponding changes to the documentation.
• [ ] I have added debugging support to my changes.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [ ] I have confirmed new and existing unit tests pass locally with my changes.
• [ ] I have added new baselines for any new tests to the repo.
• [ ] I have NOT made any changes to protocol or public interfaces in an RC branch.