Per #1528, we have interfaceId in samples/test/API shape but this is NOT needed by the protocol between the device and hub anymore and was effectively a giant no-op.

This change:
* Removes `interfaceId` from the API shape and most of the logic in core code dealing with it.
* Addresses an issue where we used the words "interfaceName" quite a bit.  What we really meant was component or componentName.  Fixed up.