Comment 3 for bug 1532250

Scenario for reproduce:
1. Create new environment
2. Choose Neutron, TUN
3. Choose Ceilometer
4. Add 3 controller+mongo
5. Add 1 compute
6. Add 1 cinder
7. Change disk configuration for all Mongo nodes. Change 'MongoDB' volume for vdc
8. Verify networks
9. Deploy the environment
10. Verify networks
11. Run OSTF tests

Log snapshot - https://drive.google.com/a/mirantis.com/file/d/0B8U7EvTbuAOlTUI5d2RtX2tkams/view?usp=sharing