[examples] update Python examples

Author: titusfortner

examples/python/tests/bidi/cdp/test_cdp.py

@@ -0,0 +1,12 @@
+def test_set_cookie(driver):
+    cookie = {'name': 'cheese',
+              'value': 'gouda',
+              'domain': 'www.selenium.dev',
+              'secure': True}
+
+    driver.execute_cdp_cmd('Network.setCookie', cookie)
+
+    driver.get('https://www.selenium.dev')
+    cheese = driver.get_cookie(cookie['name'])
+
+    assert cheese['value'] == 'gouda'