Deleting Files:
1. project_test_utils.py
2. sdn_multiple_vn_vm_basic_policy.py
3. sdn_topo_gen.py

Moving Files:
1. sdn_tests.py under old/
2. sdn_single_vm_multiple_policy_topology.py under scripts/policy/
Merge pull request #192 from ritamganguly/master

Deleting and Moving few files.