fix buffer allocate and wrapper name confliction

[eedalong]

#3119

1. register zero_point and scale with a real value Tensor rather not None, cause latter value will cause state dict load failure

2. avoid wrapper's name to be the same with module's name, cause it will cause some problems when load state dict

[ghost]

All CLA requirements met.

[linbinskn]

You have to resolve the conflicts in unit test since you have changed the name of wrap module. For example, modify
the test_compressor.py in path-to-nni/test/ut/sdk.

[eedalong]

You have to resolve the conflicts in unit test since you have changed the name of wrap module. For example, modify
the test_compressor.py in path-to-nni/test/ut/sdk.

what's the test command?