Add integ.vpc-dual-stack-ec2 test, wire up allowAllIpv6Outbound field…

… in ec2.Instance.

packages/@aws-cdk-testing/framework-integ/test/aws-ec2/test/integ.vpc-dual-stack-ec2.assets/web-server.py

@@ -0,0 +1,47 @@
+from http.server import SimpleHTTPRequestHandler
+import urllib.request
+import json
+
+class MyRequestHandler(SimpleHTTPRequestHandler):
+    def do_GET(self):
+        if self.path == '/':
+            self.send_response(200)
+            self.send_header('Content-type', 'application/json')
+            self.end_headers()
+
+            try:
+                # IPv4 request
+                response = urllib.request.urlopen('http://www.google.com')
+                status_code = response.getcode()  
+                if (status_code != 200):
+                  raise Exception(f"Received a non-successful status code: {status_code}")
+                # self.wfile.write(bytes(f"Status code from www.google.com: {status_code}\n\n", 'utf-8'))
+
+                # IPv6 request
+                response = urllib.request.urlopen('http://ipv6.google.com')
+                status_code = response.getcode()  
+                if (status_code != 200):
+                  raise Exception(f"Received a non-successful status code: {status_code}")
+                # self.wfile.write(bytes(f"Status code from ipv6.google.com: {status_code}\n\n", 'utf-8'))
+
+                json_response = {
+                          "status": 200,
+                          "body": "OK",
+                          "Data": {
+                              "OK": "OK",
+                              "status": 200,
+                          }
+                      }
+
+                self.wfile.write(json.dumps(json_response).encode('utf-8'))
+            except Exception as e:
+                self.wfile.write(bytes(f"Error: {str(e)}", 'utf-8'))
+            return
+        else:
+            super().do_GET()
+
+if __name__ == '__main__':
+    from http.server import HTTPServer
+    server = HTTPServer(('localhost', 8000), MyRequestHandler)
+    print('Server started on http://localhost:8000')
+    server.serve_forever()