🧹 refactor(test): deduplicate assertStatus helper across modules

[jackby03]

🧹 What:
Extracted duplicate assertStatus test helper functions from 11 module test files (updates, crypto, auditd, network, ntp, containers, users, firewall, mac, logging, ssh) into a shared testutil.AssertStatus function in internal/modules/util/testutil.

💡 Why:
Removes repetitive code across test suites and simplifies maintenance of test status assertions.

✅ Verification:
Ran unit tests across all module packages (go test -count=1 ./internal/modules/...) and verified all tests compile and pass cleanly. Added a dedicated unit test in internal/modules/util/testutil/testutil_test.go.

✨ Result:
Improved maintainability and code health without altering module or test behavior.

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PR created automatically by Jules for task 888092796735898172 started by @jackby03

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