StreamingQueryClient fails on multiple queries

If you execute multiple queries with UseStreaming(true), subsequent queries fail.  This is because you cannot set HttpClient.Timeout after executing the first request.

Exception:

System.InvalidOperationException
This instance has already started one or more requests. Properties can only be modified before sending the first request.
at System.Net.Http.HttpClient.CheckDisposedOrStarted()
at System.Net.Http.HttpClient.set_Timeout(TimeSpan value)
at Couchbase.N1QL.StreamingQueryClient.<ExecuteQueryAsync>d__3`1.MoveNext() in C:\Users\bburnett\Source\Repos\couchbase-net-client\Src\Couchbase\N1QL\StreamingQueryClient.cs:line 43