Revert back to Pylint 2.x (#940)

* Enforce pylint<3.0 for linting during build

* Use vanilla pylint and add recursive flag

* Ensure pylint 2.x is installed

Author: chlafreniere

builds/azure-pipelines/template-steps-build-test.yml

@@ -130,9 +130,9 @@ steps:
     architecture: 'x64'
 
 - script: |
-    pip3 install pylint_runner
+    pip3 install "pylint<3.0"
     pip3 install pylintfileheader
-    pylint_runner
+    pylint --recursive=yes .
   workingDirectory: $(Build.SourcesDirectory)/samples/samples-python
   displayName: Lint samples-python