chore(TC-G-2.2): add endpoint to CI arguments

Author: gvargas-csa

src/python_testing/TC_G_2_2.py

@@ -28,6 +28,7 @@
 #       --commissioning-method on-network
 #       --discriminator 1234
 #       --passcode 20202021
+#       --endpoint 0
 #       --PICS src/app/tests/suites/certification/ci-pics-values
 #       --trace-to json:${TRACE_TEST_JSON}.json
 #       --trace-to perfetto:${TRACE_TEST_PERFETTO}.perfetto