Add integration test that modules are loaded from the expected locations (#24170)

* Add integration test that modules are loaded from the expected locations
* Fix ping module to pass PEP8

test/sanity/code-smell/shebang.sh

@@ -7,6 +7,7 @@ grep '^#!' -rIn . \
     -e '^\./lib/ansible/modules/' \
     -e '^\./test/integration/targets/[^/]*/library/[^/]*:#!powershell$' \
     -e '^\./test/integration/targets/[^/]*/library/[^/]*:#!/usr/bin/python$' \
+    -e '^\./test/integration/targets/module_precedence/.*lib.*:#!/usr/bin/python$' \
     -e '^\./hacking/cherrypick.py:#!/usr/bin/env python3$' \
     -e ':#!/bin/sh$' \
     -e ':#!/bin/bash( -[eux]|$)' \