Running nova playbook with tag limit may lead to an error:
The conditional check 'nova_virt_type != 'ironic'' failed. The error
was: error while evaluating conditional (nova_virt_type != 'ironic'):
'nova_virt_type' is undefined\n\nThe error appears to be in
'/etc/ansible/roles/os_nova/tasks/main.yml': line 289, column 3, but
may be elsewhere in the file depending on the exact syntax problem.
It can be easily fixed by applying always tag to tasks from
nova_virt_detect.yml
Change-Id: I56aee80180804b8a3e3316cffc6fa8115513b8f1
(cherry picked from commit c90a5c2b927b955aaa82d78e65548423b24f2ecc)
b8863c62b7