Bug 2202: Adding support for cinder V3 API with V2 API for persistent volumes.

Change-Id: I7034564b91b94e6be242cb2ce0f4a5b147b87d64
Signed-off-by: Lovejeet Singh <lovejeet.singh@hsc.com>
diff --git a/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py b/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
index 9faf98d..959839f 100644
--- a/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
+++ b/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
@@ -355,12 +355,21 @@
                 endpoint_type=self.endpoint_type,
                 region_name=region_name,
             )
-            self.cinder = self.session["cinder"] = cClient.Client(
-                2,
-                session=sess,
-                endpoint_type=self.endpoint_type,
-                region_name=region_name,
-            )
+
+            if sess.get_all_version_data(service_type="volumev2"):
+                self.cinder = self.session["cinder"] = cClient.Client(
+                    2,
+                    session=sess,
+                    endpoint_type=self.endpoint_type,
+                    region_name=region_name,
+                )
+            else:
+                self.cinder = self.session["cinder"] = cClient.Client(
+                    3,
+                    session=sess,
+                    endpoint_type=self.endpoint_type,
+                    region_name=region_name,
+                )
 
             try:
                 self.my_tenant_id = self.session["my_tenant_id"] = sess.get_project_id()