Deprecate `volume_image_dep_tests`

We alignment with tempest configuration settings
'enable_volume_image_dep_tests'
To keep requirements.txt lower bound up to dated, this bumping
the Tempest version to 40.0.0 which include the image dependency
configuration
- https://review.opendev.org/c/openstack/tempest/+/914198

Change-Id: I6f219122bfe1ba1d3851a5954cb9ffc6e04ad69c
diff --git a/releasenotes/notes/cinder-tempest-plugin-volume_image_dep_tests-ba46faab68dfb799.yaml b/releasenotes/notes/cinder-tempest-plugin-volume_image_dep_tests-ba46faab68dfb799.yaml
new file mode 100644
index 0000000..9390dd9
--- /dev/null
+++ b/releasenotes/notes/cinder-tempest-plugin-volume_image_dep_tests-ba46faab68dfb799.yaml
@@ -0,0 +1,6 @@
+deprecations:
+  - |
+    Dependency test config setting 'volume_image_dep_tests'
+    in cinder-tempest-plugin is deprecated.Alternatively tempest
+    `CONF.volume_feature_enabled.enable_volume_image_dep_tests` can be used
+    to for dependency tests.