Add test data preparation step to workflow

Author: vshampor

.github/workflows/llama_cpp_plugin_build_and_test.yml

@@ -42,7 +42,7 @@ jobs:
         uses: alehechka/upload-tartifact@v2
         with:
           name: build_artifacts
-          path: ${{ github.workspace }}/bin/intel64/Release/
+          path: ${{ github.workspace }}/openvino/bin/intel64/Release/
 
   test_ubuntu20:
     needs: build_ubuntu20
@@ -54,5 +54,15 @@ jobs:
           name: build_artifacts
           path: binaries
 
+      - name: Prepare test data
+        uses: actions/checkout@v3
+        with:
+          repository: ggerganov/llama.cpp
+          path: llama.cpp
+        run: pip install llama.cpp/requirements/requirements-convert-hf-to-gguf.txt
+        run: huggingface-cli huggingface-cli download gpt2 model.safetensors tokenizer.json tokenizer_config.json vocab.json config.json merges.txt --local-dir hf_gpt2
+        run: mkdir -p ${{ github.workspace }}/test_data
+        run: python3 llama.cpp/convert-hf-to-gguf.py hf_gpt2 --outtype f32 --outfile ${{ github.workspace }}/test_data/gpt2.gguf
+
       - name: Run E2E tests
         run:  ${{ github.workspace }}/binaries/llama_cpp_e2e_tests