v2.2.0-beta1 (2.2.0.11964)

• Add ExceptionTelemetry.Message property. If it is provided it is used instead of Exception.Message property for the outer-most exception.
• Telemetry types can be excluded from sampling by specifying the ExcludedTypes property (Add ExcludedTypes element under AdaptiveSampling telemetry processor node with ';'-separated list. Possible types are "Dependency", "Event", "Exception", "PageView", "Request", "Trace").
• ServerTelemetryChannel: changed backoff logic to be less aggressive, added diagnostics event when backoff logic kicks in and added more tracing. (Done to address issues when data stops flowing until an application gets restarted)