Overhaul additional sanity tests. (#36803)

* Remove unnecessary sys.exit calls.
* Add files filtering for code-smell tests.
* Enhance test-constraints code-smell test.
* Simplify compile sanity test.
* Pass paths to importer on stdin.
* Pass paths to yamllinter on stdin.
* Add work-around for unicode path filtering.
* Enhance configure-remoting-ps1 code-smell test.
* Enhance integration-aliases code-smell test.
* Enhance azure-requirements code-smell test.
* Enhance no-illegal-filenames code-smell test.

test/sanity/code-smell/empty-init.json

@@ -4,8 +4,8 @@
         "lib/ansible/module_utils/",
         "test/units/"
     ],
-    "extensions": [
-        ".py"
+    "files": [
+        "__init__.py"
     ],
     "output": "path-message"
 }