Same code in tripleo-ansible is able to pass lint test in master and fail in stable/train

Hi,

So this lint fails rightly so in stable/train:

https://review.opendev.org/#/c/721692/1/tripleo_ansible/roles/tripleo-redhat-enforce/tasks/enforce_release.yml

- name: unknown failure during call to subscription-manager
  fail:
    msg: >-
      Unknow failure during 'subscription-manager release --show'
      {{subscribed_release.stderr}}

with:

[206] Variables should have spaces before and after: {{ var_name }}
tripleo_ansible/roles/tripleo-redhat-enforce/tasks/enforce_release.yml:32
 {{subscribed_release.stderr}}

and it's correct.

But on master the same code succeed on linters:

https://review.opendev.org/#/c/721292/10/tripleo_ansible/roles/tripleo_redhat_enforce/tasks/enforce_release.yml

(same code)

job openstack-tox-linters — build history
result SUCCESS
buildset e2c74bbfe37e48bc947ca6e4b09404d8
voting true
pipeline check
start_time 2020-04-21T16:46:01
end_time 2020-04-21T16:54:34
duration 8 mins 33 secs
project openstack/tripleo-ansible
branch master
change 721292
patchset 10
ref refs/changes/92/721292/10
ref url https://review.opendev.org/721292
log url https://2c2d6e2f92ea22484239-228e12ec4ef918b0cdd19bdeb189135d.ssl.cf1.rackcdn.com/721292/10/check/openstack-tox-linters/1fe94e6/

Is this discrepancy expected ?