feat(libsinsp_e2e): add unix_udp_client_server_read test #2658

Job	Run time
paths-filter	4s
test-drivers-amd64 😇 (bundled_deps)	9m 52s
test-drivers-arm64 😇 (bundled_deps)	14m 8s
test-scap-amd64 😆 (bundled_deps)	2m 57s
test-scap-arm64 😆 (bundled_deps)	10m 55s
build-drivers-s390x 😁 (system_deps)	39m 36s
test-drivers-ppc64le 😁 (system_deps,custom node)	0s
build-modern-bpf-skeleton	1m 33s
kernel-tests-dev	0s
kernel-tests-pr-info-upload	0s
build-scap-open-w-extern-bpf-skeleton	5m 33s
	1h 24m 38s

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