CI: Migrate socket example tests to pytest

examples/protocols/sockets/non_blocking/pytet_socket_non_blocking.py

@@ -0,0 +1,11 @@
+# SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Apache-2.0
+
+import pytest
+from pytest_embedded import Dut
+
+
+@pytest.mark.supported_targets
+@pytest.mark.generic
+def test_examples_non_block_socket_localhost(dut: Dut) -> None:
+    dut.expect(r'nonblocking-socket-client: Received: GET / HTTP/1.1', timeout=30)