Address some pylint issues (#1155)

* Address cyclic-import.

* Address redefined-builtin.

* Address redefined-argument-from-local.

* Address many redefined-outer-name.

* Address pointless-string-statement.

* No longer needed due to separate bugfix.

* Address useless-return.

* Address possibly-used-before-assignment.

* Add TODOs.

* Address super-init-not-called.

* Address function-redefined.

* Address unspecified-encoding.

* Clean up more imports.

plugins/module_utils/_compose_v2.py

@@ -942,9 +942,9 @@ class BaseComposeManager(DockerBaseClass):
                     result.pop(res)
 
     def cleanup(self):
-        for dir in self.cleanup_dirs:
+        for directory in self.cleanup_dirs:
             try:
-                shutil.rmtree(dir, True)
+                shutil.rmtree(directory, True)
             except Exception:
                 # should not happen, but simply ignore to be on the safe side
                 pass