CI: update test cases to use different environment variables

change test environments
optimize asio udp server test
fix icmp echo test case
use ethernet_router env to run iperf test cases

examples/protocols/https_server/wss_server/pytest_https_wss_server.py

@@ -109,7 +109,7 @@ def test_multiple_client_keep_alive_and_async_response(ip, port, ca_file):  # ty
 @pytest.mark.esp32c3
 @pytest.mark.esp32s2
 @pytest.mark.esp32s3
-@pytest.mark.wifi
+@pytest.mark.wifi_router
 def test_examples_protocol_https_wss_server(dut: Dut) -> None:
 
     # Get binary file