Allow to send IPv6

[SergeyKanzhelev]

@OsvaldoRosado with your latest improvements this check is no longer needed.

Also please update schema: here and here. Note files in both locations are auto-generated

[abaranch]

SDK was updated. Schema descriptions were not.

[SergeyKanzhelev]

https://github.com/Microsoft/ApplicationInsights-Home/blob/master/EndpointSpecs/Schemas/Bond/ContextTagKeys.bond#L36