AvgPoolV2GradFusionPass
Changes the AvgPooV2lGrad operator into the AvgPoolV2GradD operator.

Restrictions
The input ori_input_shape of AvgPoolV2Grad must be a const node or a data node with a value.
Parent topic: Graph Fusion Patterns
Changes the AvgPooV2lGrad operator into the AvgPoolV2GradD operator.

The input ori_input_shape of AvgPoolV2Grad must be a const node or a data node with a value.