This cartridge provides Ansible so the machine can be used as a Ansible Control Machine
To get Ansible to work on Openshift, you need to use this version of Ansible, I've added a possibility to configure where to look for and write to the known_hosts file using a environment variable, ANSIBLE_SSH_KNOWN_HOSTS. This is because cartridges may never write to ~/.ssh, so Ansible won't play nice with you unless you can specify where to find the known_hosts file.