Use microversion in put allocations in test_report_client

In some places test_report_client uses a raw client.put when
writing allocations. This defaults to the latest microversion.
This means that if the allocations format changes in the latest
microversion in a patch in placement, the nova functional tests
fail.

In this change we pin the microversion to the minimum one providing
the features used in the PUT.

Change-Id: Ia0fee6bb931770792b552ae32ef31f0a4cc466ee

Author: cdent

nova/tests/functional/test_report_client.py

@@ -1192,8 +1192,10 @@ def _set_up_provider_tree_allocs(self):
                 'user_id': uuids.user,
             },
         }
-        self.client.put('/allocations/' + uuids.cn_inst1, ret[uuids.cn_inst1])
-        self.client.put('/allocations/' + uuids.cn_inst2, ret[uuids.cn_inst2])
+        self.client.put('/allocations/' + uuids.cn_inst1, ret[uuids.cn_inst1],
+                        version='1.28')
+        self.client.put('/allocations/' + uuids.cn_inst2, ret[uuids.cn_inst2],
+                        version='1.28')
         # And on the other compute (with sharing)
         self.client.put(
             '/allocations/' + uuids.othercn_inst,
@@ -1204,7 +1206,8 @@ def _set_up_provider_tree_allocs(self):
                 'consumer_generation': None,
                 'project_id': uuids.proj,
                 'user_id': uuids.user,
-            })
+            },
+            version='1.28')
 
         return ret