[POSTMAN] Add Samples GitHub workflow (#17412)

* Add Python tests

* Add workflow to verify Postman samples

* Correct path

samples/schema/postman-collection/python/test/test_info.py

@@ -0,0 +1,25 @@
+"""
+    Testing Postman generator output
+"""
+from __future__ import absolute_import
+
+import unittest
+
+import json
+
+
+class TestInfo(unittest.TestCase):
+
+    def setUp(self):
+        with open('./postman.json', 'r') as file:
+            self.json_data = json.load(file)
+
+    def tearDown(self):
+        pass
+
+    def test_collection_name(self):
+        self.assertEqual(self.json_data['info']['name'], 'Sample project')
+
+
+if __name__ == '__main__':
+    unittest.main()