api: Drop statistics-style fields from os-hypervisors

Introduce API microversion 2.88, which makes the following changes to
a number of 'os-hypervisors'. Specifically, the following fields are
dropped from both the '/os-hypervisors/detail' (detailed list) and
'/os-hypervisors/{hypervisor_id}' (show) APIs:

- current_workload
- cpu_info
- vcpus
- vcpus_used
- free_disk_gb
- local_gb
- local_gb_used
- disk_available_least
- free_ram_mb
- memory_mb
- memory_mb_used
- running_vms

In addition, the '/os-hypervisors/statistics' API, which provided a
summary of the above stats but for all hypervisors in the deployment, is
dropped entirely.

Finally, the '/os-hypervisors/{hypervisor}/uptime' API, which provided a
similar response to the '/os-hypervisors/{hypervisor}' API but with an
additional 'uptime' field, has been removed in favour of including this
field in the primary '/os-hypervisors/{hypervisor}' API.

A small tweak to 'tox.ini' that allows us to share some venvs is
included.

Part of blueprint modernize-os-hypervisors-api

Change-Id: I515e484ade6c6455f82a3067940a418a0d7d965a
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

1 files changed, 12 insertions, 8 deletions

diff --git a/nova/tests/functional/test_servers.py b/nova/tests/functional/test_servers.py
index 3f23b8ed92..4277fbd1dc 100644
--- a/nova/tests/functional/test_servers.py
+++ b/nova/tests/functional/test_servers.py
@@ -3956,10 +3956,12 @@ class VolumeBackedServerTest(integrated_helpers.ProviderUsageBaseTestCase):
         # 10gb root, 20gb ephemeral, 5gb swap
         expected_usage = 35
         self.assertEqual(expected_usage, resources['DISK_GB'])
-        # Ensure the compute node is reporting the correct disk usage
-        self.assertEqual(
-            expected_usage,
-            self.admin_api.get_hypervisor_stats()['local_gb_used'])
+        # Ensure the compute node is reporting the correct disk usage. We're
+        # using v2.87 explicitly as the api returns 404 starting with 2.88
+        with nova_utils.temporary_mutation(self.api, microversion='2.87'):
+            self.assertEqual(
+                expected_usage,
+                self.admin_api.get_hypervisor_stats()['local_gb_used'])
 
     def test_volume_backed_image_type_filter(self):
         # Enable the image type support filter and ensure that a
@@ -3978,10 +3980,12 @@ class VolumeBackedServerTest(integrated_helpers.ProviderUsageBaseTestCase):
         # 0gb root, 20gb ephemeral, 5gb swap
         expected_usage = 25
         self.assertEqual(expected_usage, resources['DISK_GB'])
-        # Ensure the compute node is reporting the correct disk usage
-        self.assertEqual(
-            expected_usage,
-            self.admin_api.get_hypervisor_stats()['local_gb_used'])
+        # Ensure the compute node is reporting the correct disk usage. We're
+        # using v2.87 explicitly as the api returns 404 starting with 2.88
+        with nova_utils.temporary_mutation(self.api, microversion='2.87'):
+            self.assertEqual(
+                expected_usage,
+                self.admin_api.get_hypervisor_stats()['local_gb_used'])
 
         # Now let's hack the RequestSpec.is_bfv field to mimic migrating an
         # old instance created before RequestSpec.is_bfv was set in the API,