Added vpn_required mark to ptest.ini #338

Job	Run time
Set CI/CD metadata	6s
Commit stage / Check Markdown format	3s
Commit stage / Count lines of code	5s
Commit stage / Check file format	6s
Commit stage / Check English usage	5s
Commit stage / Scan dependencies	21s
Commit stage / Scan secrets	7s
Test stage / Linting	3s
Test stage / Unit tests	5s
Test stage / Perform static analysis	3s
Test stage / Test coverage	2s
Build & Assurance stage / Run Util Tests	22s
	1m 28s

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