- Added property `KestrelServerOptions.MaxRequestBufferSize`
- Default is 1,048,576 bytes (1MB)
- If value is null, the size of the request buffer is unlimited.
- Fixed bug in `IConnectionControl.Resume()` where `_socket.ReadStart()` can throw if the socket is already disconnected.
- Made `UvStreamHandle.ReadStop()` idempotent, to match `uv_read_stop()`.
- Change most tests to use dynamic ports, rather than a fixed port obtained from GetNextPort().
- Add several new cases to `AddressRegistrationTests` and `ServerAddressFacts`.
- Remove project `test\Microsoft.AspNetCore.Server.Kestrel.TestCommon`. It's not longer needed, since only `AddressRegistrationTests` uses `GetNextPort()`.