implement onnx config for SqueezeBert
### Feature request

see https://github.com/huggingface/transformers/issues/16308

### Motivation

see https://github.com/huggingface/transformers/issues/16308

### Your contribution

added onnx config for SqueezeBert
Hi @lewtun , @LysandreJik   here are a few things about the testing results
1. pytest test_onnx_v2.py:
    3 passes, 204 skipped, 8 warnings, no errors

2.  RUN_SLOW=1 pytest tests/onnx/test_onnx_v2.py -s -k "squeezebert"  
    gave warning "No GPU/TPU found, falling back to CPU"
    then complained "Could not load dynamic library 'libcuda.so.1' "
    and final message: "7 failed, 200 deselected, 7 warnings"
    
system info: ubuntu 20.04, pytorch: 1.11.0+cu102
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