Bad runcmd identation at zuul reproducer openstack nodepool

[Quique Llorente]

After merging https://review.rdoproject.org/r/#/c/19893/ we remove cloud-init from openstack nodes before starting jobs, this is still not working since "runcmd" is not under "userdata"

            userdata: |
              #cloud-config
              password: changeme
              chpasswd: { expire: False }
              ssh_pwauth: False
              output: { all: '| tee -a /var/log/cloud-init-output.log' }
              ssh_authorized_keys:
                - ssh-rsa
              users:
              - default
              - name: zuul
                ssh_authorized_keys:
                  - ssh-rsa
            runcmd:
              - [ dnf, remove, -y, cloud-init ]
              - [ dnf, update, -y ]
              - reboot

[Sagi (Sergey) Shnaidman (sshnaidm)]

fix in https://review.rdoproject.org/r/#/c/19954/