Fixes #23905 - Use /usr/share/foreman-proxy as ansible_dir
Using /etc/ansible means that the ~foreman-proxy/.ansible.cfg file we had set up will be ignored. This means the callback is ignored and any other options we might set in /etc/foreman-proxy/ansible.cfg
Related issues
Bug #23905: Default ansible_dir should be ~foreman-proxy
Fixes #23905 - Use /usr/share/foreman-proxy as ansible_dir
Using /etc/ansible means that the ~foreman-proxy/.ansible.cfg file we
had set up will be ignored. This means the callback is ignored and any
other options we might set in /etc/foreman-proxy/ansible.cfg