Add many tests for TSI (unix sockets, UDP)#472

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mtjhrc wants to merge 3 commits intocontainers:mainfrom

mtjhrc:test-fix-tsi

Commits on Dec 1, 2025

tests: Add support for running tests with namespace isolation
mtjhrc
committed

Commits on Dec 10, 2025

WIP tests: Rewrite the TSI test and also test dgram and unix sockets
mtjhrc
committed
vsock/tsi_dgram: Make send_to bind to correct socket adress structs
mtjhrc
committed