fix duplicates file and upload name uniqueness

[altendky]

Purpose:

uploaded artifacts must now have unique names. also, this makes the file names unique for coverage and pytest outputs so they can all make it to the post job without clobbering each other.

Current Behavior:

New Behavior:

Testing Notes:

[github-actions]

File	Coverage	Missing Lines
tests/build-job-matrix.py	80.0%	lines 153-154

Total	Missing	Coverage
10 lines	2 lines	80%

[coveralls-official]

Pull Request Test Coverage Report for Build 7590064577

Warning: This coverage report may be inaccurate.

We've detected an issue with your CI configuration that might affect the accuracy of this pull request's coverage report.
To ensure accuracy in future PRs, please see these guidelines.
A quick fix for this PR: rebase it; your next report should be accurate.

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.07%) to 90.58%

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Totals
Change from base Build 7589765628:	-0.07%
Covered Lines:	94772
Relevant Lines:	104584

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💛 - Coveralls