NCLProvisionerCapability getAllocatedCircuits returns requested circuits.

NCLProvisionerCapability manages requestedCircuits.
Thus, allocate, deallocate and getAllocated Circuits refer to requested circuits but not truly allocated.

Truly allocated circuits are managed by ICircuitProvisioningCapability.

This patch fixes issue OPENNAAS-1399
Merge pull request #916 from isartcanyameres/fix/get-allocated-ncl-prov-capab

NCLProvisionerCapability getAllocatedCircuits returns requested circuits.