update vehcile reid model PPLCNet2.5x
# global configs
+# pretrained_model: https://paddle-imagenet-models-name.bj.bcebos.com/dygraph/rec/models/pretrain/vehicle_reid_PPLCNet2.5x_VERIWild_v1.0_pretrained.pdparams
+# VeriWild v1 small: recall1: 0.93736, recall5: 0.98427, mAP: 0.82125
Global:
checkpoints: null
pretrained_model: null
