Description of problem:

The customer is running the deployment command to change NTP/DNS on overcloud nodes. 
During this deployment, it failed with some errors which are fixed at the moment.

The latest error we saw was coming from the playbook https://opendev.org/openstack/tripleo-heat-templates/src/branch/master/deployment/octavia/octavia-deployment-config.j2.yaml#L280

Here is the error:

~~~
2022-10-20 14:48:03,050 p=85125 u=mistral n=ansible | Thursday 20 October 2022  14:48:03 +0800 (0:00:00.724)       0:36:52.331 ****** 
2022-10-20 14:48:03,359 p=85125 u=mistral n=ansible | fatal: [undercloud]: FAILED! => {"msg": "Failed to get information on remote file (/var/lib/mistral/overcloud/octavia-ansible/group_vars/octavia_vars.yaml): Permission denied"}
~~~

Version-Release number of selected component (if applicable):

puppet-tripleo-11.5.0-1.20211215173613.el8ost.noarch        Sat May  7 22:45:17 2022
ansible-2.9.19-1.el8ae.noarch                               Fri Jun  4 00:28:43 2021
python3-heat-agent-ansible-1.10.1-1.20210527231347.96b819c.el8ost.noarch Sat May  7 22:45:16 2022
puppet-octavia-15.4.1-1.20210528140647.b741773.el8ost.noarch Sat May  7 22:44:06 2022
Red Hat Enterprise Linux release 8.2 (Ootpa)
Red Hat OpenStack Platform release 16.1.8 (Train)

How reproducible:
N/A

Steps to Reproduce:
1. N/A
2.
3.

Actual results:
Deployment failed with error.

Expected results:
Deployment should get completed without errors

Additional info: