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/test-constraints.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+
+import re
+import sys
+
+
+def main():
+    skip = set([
+        'test/runner/requirements/constraints.txt',
+        'test/runner/requirements/integration.cloud.azure.txt',
+    ])
+
+    for path in sys.argv[1:] or sys.stdin.read().splitlines():
+        if path in skip:
+            continue
+
+        with open(path, 'r') as path_fd:
+            for line, text in enumerate(path_fd.readlines()):
+                match = re.search(r'^[^;#]*?([<>=])(?!.*sanity_ok.*)', text)
+
+                if match:
+                    print('%s:%d:%d: put constraints in `test/runner/requirements/constraints.txt`' % (
+                        path, line + 1, match.start(1) + 1))
+
+
+if __name__ == '__main__':
+    main()