Add missing ssh key reference during deployment

.drone.yml

@@ -19,7 +19,7 @@ steps:
   - ansible-galaxy collection install -r requirements.yml
   - |
     ansible-playbook \
-      --extra-vars "repo_username=$${repo_username} repo_password=$${repo_password} hv_password=$${hv_password} root_password=$${root_password}" \
+      --extra-vars "repo_username=$${repo_username} repo_password=$${repo_password} hv_password=$${hv_password} root_password=$${root_password} private_key=$${private_key}" \
       playbook.yml
   environment:
     repo_username:

playbook.yml

@@ -31,7 +31,7 @@
       properties:
         guestinfo.hostname: "{{ cluster.name | upper }}-{{ (item.ip | checksum)[-5:] | upper }}"
         guestinfo.rootpw: "{{ root_password }}"
-        guestinfo.rootsshkey: "foo"
+        guestinfo.rootsshkey: "{{ private_key }}"
         guestinfo.ntpserver: "{{ network.ntpserver }}"
         guestinfo.ipaddress: "{{ item.ip | ansible.utils.ipaddr('address') }}"
         guestinfo.prefixlength: "{{ item.ip | ansible.utils.ipaddr('prefix') }}"