add show detail for volume Api V3

add show details for volume api v3 and add unit test

Change-Id: I029aa08cb7286e1b4cd995642928d667b87afb44
diff --git a/releasenotes/notes/add-show-api-v3-details-api-to-v3-versions-client-4b408427379cabfe.yaml b/releasenotes/notes/add-show-api-v3-details-api-to-v3-versions-client-4b408427379cabfe.yaml
new file mode 100644
index 0000000..50f10fa
--- /dev/null
+++ b/releasenotes/notes/add-show-api-v3-details-api-to-v3-versions-client-4b408427379cabfe.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Add show api version details function to v3
+    versions_client library for cinder.
+
+    * show_version
\ No newline at end of file