Hi,
sysctl module have been merged to the devel tree of ansible.
I follow this mailing-list and the issue list of ansible for any request or issue about sysctl.
You can take a look at the embedded documentation to see how to easily be able to use it :
Or looking at my personnal blog post about this module :
I now going to continue the sysctl module emerge (tool provided by the gentoo package manager : portage)