Use placement microversion 1.26 in update_from_provider_tree

Recent change I1fd85860c96e8690fbcf93c8a2f02178168bfd5a changed the
microversion for updating the inventory only in the
_update_inventory_attempt, missing _set_inventory_for_provider
which is called from update_from_provider_tree.
It causes failures with ironic virt driver.

Closes-Bug: 1787910
Change-Id: Ibdebd02ce6f52ca87559e9d2d5c068f37bf4b6db

nova/scheduler/client/report.py

@@ -1095,7 +1095,11 @@ class SchedulerReportClient(object):
         # @safe_connect, so we don't want to decorate this whole method with it
         @safe_connect
         def do_put(url, payload):
-            return self.put(url, payload, global_request_id=context.global_id)
+            # NOTE(vdrok): in microversion 1.26 it is allowed to have inventory
+            # records with reserved value equal to total
+            return self.put(
+                url, payload, global_request_id=context.global_id,
+                version=ALLOW_RESERVED_EQUAL_TOTAL_INVENTORY_VERSION)
 
         # If not different from what we've got, short out
         if not self._provider_tree.has_inventory_changed(rp_uuid, inv_data):

nova/tests/functional/test_report_client.py

@@ -79,7 +79,7 @@ class VersionCheckingReportClient(report.SchedulerReportClient):
 
 class SchedulerReportClientTestBase(test.TestCase):
 
-    def _interceptor(self, app=None):
+    def _interceptor(self, app=None, latest_microversion=True):
         """Set up an intercepted placement API to test against.
 
         Use as e.g.
@@ -88,6 +88,10 @@ class SchedulerReportClientTestBase(test.TestCase):
             ret = client.get_provider_tree_and_ensure_root(...)
 
         :param app: An optional wsgi app loader.
+        :param latest_microversion: If True (the default), API requests will
+                                    use the latest microversion if not
+                                    otherwise specified. If False, the base
+                                    microversion is the default.
         :return: Context manager, which in turn returns a direct
                 SchedulerReportClient.
         """
@@ -102,7 +106,8 @@ class SchedulerReportClientTestBase(test.TestCase):
                 self._set_client(client)
                 return client
 
-        interceptor = ReportClientInterceptor(CONF, latest_microversion=True)
+        interceptor = ReportClientInterceptor(
+            CONF, latest_microversion=latest_microversion)
         if app:
             interceptor.app = app
         return interceptor
@@ -505,6 +510,29 @@ class SchedulerReportClientTests(SchedulerReportClientTestBase):
             self.assertFalse(prov_tree.have_aggregates_changed(
                 self.compute_uuid, [uuids.agg_disk_1, uuids.agg_disk_2]))
 
+    def test__set_inventory_reserved_eq_total(self):
+        with self._interceptor(latest_microversion=False):
+            # Create the provider
+            self.client._ensure_resource_provider(self.context, uuids.cn)
+
+            # Make sure we can set reserved value equal to total
+            inv = {
+                fields.ResourceClass.SRIOV_NET_VF: {
+                    'total': 24,
+                    'reserved': 24,
+                    'min_unit': 1,
+                    'max_unit': 24,
+                    'step_size': 1,
+                    'allocation_ratio': 1.0,
+                },
+            }
+            self.client._set_inventory_for_provider(
+                self.context, uuids.cn, inv)
+            self.assertEqual(
+                inv,
+                self.client._get_inventory(
+                    self.context, uuids.cn)['inventories'])
+
     def test__set_inventory_for_provider(self):
         """Tests for SchedulerReportClient._set_inventory_for_provider, NOT
         set_inventory_for_provider.