Add Tests for Groups Volume APIs - Part 3

Generic volume groups support was added to Cinder in the
Newton release:
https://blueprints.launchpad.net/cinder/+spec/generic-volume-group

This is the 3rd patch that adds the tempest tests for generic
volume groups APIs in Cinder. It adds tests for the following API:

  * create group from src

Change-Id: I30c6709fe3fe9e75f6a2d980d0a5ffaedb42dad3
diff --git a/releasenotes/notes/add-create-group-from-src-tempest-tests-9eb8b0b4b5c52055.yaml b/releasenotes/notes/add-create-group-from-src-tempest-tests-9eb8b0b4b5c52055.yaml
new file mode 100644
index 0000000..dec4a27
--- /dev/null
+++ b/releasenotes/notes/add-create-group-from-src-tempest-tests-9eb8b0b4b5c52055.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Add create_group_from_source to groups_client in the volume service library.