Version node lookup payload

This payload may change over time and should be versioned.
Corresponds to https://review.openstack.org/#/c/85228/

Change-Id: I58b1d69a2c41ff105038178632e289cb4b12c971

ironic_python_agent/ironic_api_client.py

@@ -25,6 +25,7 @@ from ironic_python_agent.openstack.common import loopingcall
 
 class APIClient(object):
     api_version = 'v1'
+    payload_version = '1'
 
     def __init__(self, api_url):
         self.api_url = api_url.rstrip('/')
@@ -116,7 +117,8 @@ class APIClient(object):
         # This hardware won't be saved on the node currently, because of
         # how driver_vendor_passthru is implemented (no node saving).
         data = {
-            'hardware': hardware_info
+            'version': self.payload_version,
+            'inventory': hardware_info
         }
 
         # Make the POST, make sure we get back normal data/status codes and

ironic_python_agent/tests/ironic_api_client.py

@@ -173,7 +173,8 @@ class TestBaseIronicPythonAgent(test_base.BaseTestCase):
 
         data = self.api_client.session.request.call_args[1]['data']
         content = json.loads(data)
-        self.assertEqual(content['hardware'], [
+        self.assertEqual(content['version'], self.api_client.payload_version)
+        self.assertEqual(content['inventory'], [
             {
                 'type': 'mac_address',
                 'id': 'aa:bb:cc:dd:ee:ff',