Dropout rate naming inconsistency

[haydenstites]

In the BuildFullyConnected function used in the BasicFullyConnectedModule module the argument for dropout rate is dropout_rate, where in BasicConv1D it is named dropout_rates.

[adamklie]

I guess that's because the FCN only allows a single dropout rate across layers, whereas the conv allows different dropout rates for each layer. But we can allow the FCN to be more flexible too