Always allow same net traffic in the smoketest.

This makes handling smoketest connectivity a little easier.
Give the Nova smoketest 10 minutes to run.

It can take awhile for networking to actually start functioning on the
deployed instances, so we have to wait longer.
Merge pull request #137 from VictorLowther/pull-req-release-pebbles-master-12745a5647dbac55ecb9d7f3ddef5b9f4e11f5e7

Nova smoketests can spin up a VM and ping it. [1/1]