nit: Correct the used SSH key in ansible inventory

We were missing the right ssh key configuration in the generated ansible
inventory, leading to "some" issues.

We also ensure ansible won't complain about the remote host keys. A
better solution might come later, once we're over the deep network
refactoring

roles/libvirt_manager/templates/inventory.yml.j2

@@ -4,10 +4,12 @@
     {{ host.nic.host }}:
       ansible_host: {{ (host.stdout.split())[3] | ansible.utils.ipaddr('address') }}
       ansible_user: {{ admin_user }}
-{% if vm_type is match('^crc.*') %}
+      ansible_ssh_common_args: '-o StrictHostKeyChecking=no'
+{% if vm_type is match('^crc.*')                            %}
       ansible_ssh_private_key_file: ~/.ssh/crc_key
-{% endif %}
-{% if vm_type is match('^ocp.*') %}
+{% elif vm_type is match('^ocp.*')                          %}
       ansible_ssh_private_key_file: ~/.ssh/devscripts_key
-{% endif %}
+{% else                                                     %}
+      ansible_ssh_private_key_file: ~/.ssh/id_cifw
+{% endif                                                    %}
 {% endfor %}