Add creation of default network deployment as a DB migration.

Not the best solution, but this will get us to the point where we can run the network BDD tests in the dev environment.
This migration will probably be removed and replaced with a better solution at some point.
Merge pull request #163 from cdearborn/pull-req-master-4a0d2c563f8ca91a70eca8e7b66271115a07cd8c

Create default network barclamp deployment in DB migration [2/2]