Change RequestToFlowLogic class name to RequestToFlowsLogic

Typo error in blueprint for RequestToFlowLogic class. The requestToFlowsLogic bean was defined to the RequestToFlowsLogic class, which didin't exist.

https://github.com/dana-i2cat/opennaas/blob/develop/extensions/bundles/ofertie.ncl/src/main/resources/OSGI-INF/blueprint/blueprint.xml

Renamed to RequestToFlowsLogic according to the interface name it implements.