Add related test to Bug #1732428

Reproduce data loss when migrating unshelved qcow2 instance.

Add also [compute-feature-enabled]/shelve_migrate config, to enable this
test only on supported environment.

Depends-On: https://review.opendev.org/#/c/696084/
Depends-On: https://review.opendev.org/#/c/752463/
Change-Id: I3044d59b4f1505accefdaafafecef685cb9a9af5
Related-Bug: #1732428
diff --git a/releasenotes/notes/add-compute-feature-shelve-migrate-fdbd3633abe65c4e.yaml b/releasenotes/notes/add-compute-feature-shelve-migrate-fdbd3633abe65c4e.yaml
new file mode 100644
index 0000000..121e060
--- /dev/null
+++ b/releasenotes/notes/add-compute-feature-shelve-migrate-fdbd3633abe65c4e.yaml
@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Add a new config option ``[compute-feature-enabled] shelve_migrate``
+    which enable test for environment that support cold migration of qcow2
+    unshelved instance.