* [stable-2.9] Set alter_sys=True instead of False to address backwards incompat (#64670)
* Set alter_sys=True instead of False to address backwards incompat
* ci_complete
* Add integration test
* ci_complete
* sanity
* ci_complete
* Changelog fragment
* Update import test and validate-modules to match.
(cherry picked from commit b93d92ef9a)
Co-authored-by: Matt Martz <matt@sivel.net>
* Rebase and add alter_sys to validate-modules
