Move exporter E2E tests to pytest (#1476)

* Move exporter E2E tests to pytest
* Move tests to MCTQ-nightly
* Disable outputs compare check for now, until further debug

Author: elad-c

.github/workflows/run_keras_tests.yml

@@ -20,7 +20,8 @@ jobs:
         with:
           python-version: ${{ inputs.python-version }}
       - name: Install dependencies
-        run: |    
+        run: |   
+          sed -i "/mct-quantizers/c\mct-quantizers-nightly" requirements.txt
           python -m pip install --upgrade pip
           pip install -r requirements.txt
           pip install tensorflow==${{ inputs.tf-version }} sony-custom-layers 

.github/workflows/run_pytorch_tests.yml

@@ -27,6 +27,7 @@ jobs:
           mv temp_requirements.txt requirements.txt
       - name: Install dependencies
         run: |
+          sed -i "/mct-quantizers/c\mct-quantizers-nightly" requirements.txt
           python -m pip install --upgrade pip
           pip install -r requirements.txt          
           pip install torch==${{ inputs.torch-version }} torchvision onnx onnxruntime "onnxruntime-extensions<0.14"

model_compression_toolkit/exporter/model_exporter/pytorch/fakely_quant_onnx_pytorch_exporter.py

@@ -19,7 +19,6 @@
 
 from mct_quantizers import PytorchActivationQuantizationHolder, PytorchQuantizationWrapper
 
-from model_compression_toolkit.core.pytorch.reader.node_holders import DummyPlaceHolder
 from model_compression_toolkit.verify_packages import FOUND_ONNX
 from model_compression_toolkit.logger import Logger
 from model_compression_toolkit.core.pytorch.utils import to_torch_tensor