Made changes to Service bus scaleout
- Handle errors that may occur in receive loop.
- Updated to service bus 2.0 beta package.

Fixes #1504
Updates stress runs to support.
- Added ServiceBusMessageBusRun.
- Added parameters to support SqlMessageBusRun, RedisMessageBusRun and ServiceBusMessageBusRun.
- Made all ScaleoutConfiguration take required ctor arguments.
Fixed fxcop errors.
Don't raise error handler on OperationCancelledException
Merge branch 'release' into dev