New:
Adding support to store test_description;
Adding support to store L2 Agent version;
Remove credentials when storing RAW command;
Bugfix:
Fix the logic for fetching the NIC name
Document enhancements:
Enhance documents for storing results to MongoDB;
Adding a link to an example JSON file generated by VMTP;
Change-Id: Id9181c6ba7900cedb7b19fc8e39cd659ee129374
8697935d86