Updating Zumo build of azure node SDK to use most recent notification hub module and updating to 0.6.9

Also:
1. Update ServiceBus to 0.6.9 to allow NotificationHub tests to work
2. Add nock dependency for NotificationHub tests
3. Add NotifcationHub tests
Fix up Service Bus test to match new internals
Various test "hacks" for missing constants when ServiceBus submodule is an npm dependency
Update to azure-sb with corrected dependencies
Lock should to same version used in branch the nh tests come from
Merge pull request #1287 from toddreifsteck/zumo

Update zumo azure sdk to use most recent ServiceBusClient