Improve handling of network test changes.

test/runner/lib/classification.py

@@ -352,6 +352,9 @@ class PathMapper(object):
             }
 
         if path.startswith('test/integration/'):
+            if self.prefixes.get(name) == 'network' and ext == '.yaml':
+                return minimal  # network integration test playbooks are not used by ansible-test
+
             return {
                 'integration': 'all',
                 'windows-integration': 'all',