Added vpn_required mark to ptest.ini #337

Job	Run time
Set CI/CD metadata	6s
Commit stage / Count lines of code	6s
Commit stage / Check English usage	4s
Commit stage / Check Markdown format	4s
Commit stage / Check file format	4s
Commit stage / Scan dependencies	21s
Commit stage / Scan secrets	5s
Test stage / Unit tests	3s
Test stage / Linting	3s
Test stage / Test coverage	3s
Test stage / Perform static analysis	3s
Build & Assurance stage	0s
	1m 2s

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