update Inshop config

ppcls/configs/Products/ResNet50_vd_Inshop.yaml

@@ -90,10 +90,10 @@ DataLoader:
             r1: 0.3
             mean: [0., 0., 0.]
     sampler:
-      name: DistributedRandomIdentitySampler
+      name: PKSampler
       batch_size: 64
-      num_instances: 2
-      drop_last: False
+      sample_per_id: 2
+      drop_last: True
       shuffle: True
     loader:
       num_workers: 4