Remove legacy test alias migration script. (#19629)

* Require code-smell tests to be files.
* Add sanity check for integration test aliases.
* Remove migration script for test aliases.

test/sanity/code-smell/integration-aliases.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+
+import os
+import textwrap
+
+
+def main():
+    targets_dir = 'test/integration/targets'
+
+    with open('test/integration/target-prefixes.network', 'r') as prefixes_fd:
+        network_prefixes = prefixes_fd.read().splitlines()
+
+    missing_aliases = []
+
+    for target in sorted(os.listdir(targets_dir)):
+        target_dir = os.path.join(targets_dir, target)
+        aliases_path = os.path.join(target_dir, 'aliases')
+        files = sorted(os.listdir(target_dir))
+
+        # aliases already defined
+        if os.path.exists(aliases_path):
+            continue
+
+        # don't require aliases for support directories
+        if any(os.path.splitext(f)[0] == 'test' for f in files):
+            continue
+
+        # don't require aliases for setup_ directories
+        if target.startswith('setup_'):
+            continue
+
+        # don't require aliases for prepare_ directories
+        if target.startswith('prepare_'):
+            continue
+
+        # TODO: remove this exclusion once the `ansible-test network-integration` command is working properly
+        # don't require aliases for network modules
+        if any(target.startswith('%s_' % prefix) for prefix in network_prefixes):
+            continue
+
+        missing_aliases.append(target_dir)
+
+    if missing_aliases:
+        message = '''
+        The following integration target directories are missing `aliases` files:
+
+        %s
+
+        Unless a test cannot run as part of CI, you'll want to add an appropriate CI alias, such as:
+
+        posix/ci/group1
+        windows/ci/group2
+
+        The CI groups are used to balance tests across multiple jobs to minimize test run time.
+
+        Aliases can also be used to express test requirements:
+
+        needs/privileged
+        needs/root
+        needs/ssh
+
+        Other aliases are used to skip tests under certain conditions:
+
+        skip/freebsd
+        skip/osx
+        skip/python3
+
+        Take a look at existing `aliases` files to see what aliases are available and how they're used.
+        ''' % '\n'.join(missing_aliases)
+
+        print(textwrap.dedent(message).strip())
+
+        exit(1)
+
+
+if __name__ == '__main__':
+    main()