RIFT-14308 Meaningful logs  while initalizing Openstack driver

Original fix by: Ananda Baitharu <ananda.baitharu@riftio.com>
Signed-off-by: Philip Joseph <philip.joseph@riftio.com>
diff --git a/common/python/rift/mano/cloud/accounts.py b/common/python/rift/mano/cloud/accounts.py
index 57ca55f..d3aa860 100644
--- a/common/python/rift/mano/cloud/accounts.py
+++ b/common/python/rift/mano/cloud/accounts.py
@@ -21,6 +21,7 @@
 require_version('RwcalYang', '1.0')
 require_version('RwTypes', '1.0')
 require_version('RwCloudYang', '1.0')
+require_version('RwCal', '1.0')
 
 from gi.repository import (
         RwTypes,