Use ArrowReader instead of ArrowStreamReader in FlightSqlClient.executeIngest method

[eramitmittal]

Describe the enhancement requested

Currently FlightSqlClient.executeIngest(final ArrowStreamReader dataReader, ...) accepts an ArrowStreamReader which is a subclass of ArrowReader. This is an oversight as really what we need is ArrowReader to allow passing any kind of Arrow Reader.

[eramitmittal]

merged, closing