fix(userspace/libsinsp): restore ifinfo unit tests #4932

Job	Run time
build-libs-linux-amd64-static 🎃	22m 38s
build-libs-linux-amd64-asan 🧐	9m 50s
build-libs-linux-amd64 😁 (system_deps)	6m 8s
build-libs-others-amd64 😨 (windows-latest)	4m 47s
build-libs-linux-amd64 😁 (bundled_deps)	17m 0s
build-libs-others-amd64 😨 (macos-latest)	8m 40s
build-shared-libs-linux-amd64 🧐	3m 38s
build-libs-linux-amd64 😁 (system_deps_w_chisels)	6m 24s
build-libs-linux-amd64 😁 (system_deps_minimal)	3m 39s
build-shared-libs-macos-amd64 😨	4m 57s
run-e2e-tests-amd64 (system_deps)	8m 36s
build-libs-linux-arm64 😁 (system_deps)	5m 47s
run-e2e-tests-amd64 (bundled_deps)	19m 47s
build-libs-linux-arm64 😁 (bundled_deps)	17m 9s
run-e2e-tests-amd64 (system_deps_w_chisels)	8m 53s
build-libs-linux-arm64 😁 (system_deps_w_chisels)	5m 54s
build-libs-linux-arm64 😁 (system_deps_minimal)	4m 1s
run-e2e-tests-amd64 (asan)	21m 23s
test-libs-static (bundled_deps)	15m 31s
build-libs-emscripten 🧐	3m 52s
	3h 18m 34s

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