[scripts] Update python - autorest - pr with new autorest test folder structure (Azure#19887)

Author: iscai-msft

eng/pipelines/autorest_checks.yml

@@ -40,25 +40,24 @@ jobs:
           versionSpec: $(PythonVersion)
 
       - script: |
-          pip install -r eng/autorest_req.txt
           git clone $(auto_rest_clone_url)
           cd autorest.python
           git checkout $(repo_branch)
           npm install
         displayName: 'Prepare Environment'
 
       - script: |
-          cd $(Build.SourcesDirectory)/autorest.python/test/vanilla
+          cd $(Build.SourcesDirectory)/autorest.python/test/vanilla/legacy
           pip install $(Build.SourcesDirectory)/$(source_path_azure_core)
           pip install -r requirements.txt
           pip freeze
-          pytest $(Build.SourcesDirectory)/autorest.python/test/vanilla
-        displayName: 'Install azure-core and Test Vanilla'
+          pytest $(Build.SourcesDirectory)/autorest.python/test/vanilla/legacy
+        displayName: 'Install azure-core and Test Vanilla Legacy'
 
       - script: |
-          cd $(Build.SourcesDirectory)/autorest.python/test/azure
+          cd $(Build.SourcesDirectory)/autorest.python/test/azure/legacy
           pip install $(Build.SourcesDirectory)/$(source_path_azure_mgmt_core)
           pip install -r requirements.txt
           pip freeze
-          pytest $(Build.SourcesDirectory)/autorest.python/test/azure
-        displayName: 'Install azure-mgmt-core and Test Azure'
+          pytest $(Build.SourcesDirectory)/autorest.python/test/azure/legacy
+        displayName: 'Install azure-mgmt-core and Test Azure Legacy'