feature: add webhook example server scripts (#16020)

Co-authored-by: QIU Jian <qiujian@yunionyun.com>

scripts/webhook.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+from http.server import BaseHTTPRequestHandler, HTTPServer
+import time
+
+
+class MyServer(BaseHTTPRequestHandler):
+
+    def do_POST(self):
+        print("event", self.headers.get('X-Yunion-Event'))
+        contlenstr = self.headers.get('Content-Length')
+        contlen = 0
+        if len(contlenstr) > 0:
+            contlen = int(contlenstr)
+        print(self.rfile.read(contlen))
+        self.send_response(200)
+        self.send_header("Content-type", "application/json")
+        self.end_headers()
+        self.wfile.write(bytes('{"result":"ok"}', encoding='utf-8'))
+
+
+def serve(hostName, serverPort):
+    webServer = HTTPServer((hostName, serverPort), MyServer)
+    print("Server started http://%s:%s" % (hostName, serverPort))
+    try:
+        webServer.serve_forever()
+    except KeyboardInterrupt:
+        pass
+
+    webServer.server_close()
+    print("Server stopped.")
+
+
+if __name__ == "__main__":        
+    serve('0.0.0.0', 20888)