We should override the cassandra data_dir only when it's input through the testbed.py Partial-Bug: #1419319
We should override the cassandra data_dir only when it's input through
the testbed.py
Partial-Bug: #1419319

Change-Id: I71fc2bc47ae43331def22e3aad786521ce5ff880

Juniper/contrail-provisioning,Juniper/contrail-provisioning