Centos8 train image build jobs are failing due to missing Centos image.

[Sandeep Yadav]

Description:

Centos8 train image build jobs are failing due to missing Centos image.

https://logserver.rdoproject.org/openstack-periodic-integration-stable4/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-centos-8-buildimage-ironic-python-agent-train/4c61b97/job-output.txt
~~~
2023-05-25 09:17:39.483939 | TASK [oooci-build-images : Download TripleO source image]
2023-05-25 09:28:12.583139 | primary | ERROR
2023-05-25 09:28:12.583358 | primary | {
2023-05-25 09:28:12.583405 | primary | "attempts": 60,
2023-05-25 09:28:12.583437 | primary | "dest": "/home/zuul/workspace/CentOS-Stream-GenericCloud-8-20230404.0.x86_64.qcow2",
2023-05-25 09:28:12.583465 | primary | "elapsed": 0,
2023-05-25 09:28:12.583492 | primary | "msg": "Request failed",
2023-05-25 09:28:12.583518 | primary | "response": "HTTP Error 404: Not Found",
2023-05-25 09:28:12.583542 | primary | "status_code": 404,
2023-05-25 09:28:12.583566 | primary | "url": "https://cloud.centos.org/centos/8-stream/x86_64/images/CentOS-Stream-GenericCloud-8-20230404.0.x86_64.qcow2"
2023-05-25 09:28:12.583590 | primary |
~~~

[Sandeep Yadav (sandeepyadav93)]

Fix: https://review.opendev.org/c/openstack/tripleo-ci/+/884324
Testing here: https://review.rdoproject.org/r/c/testproject/+/46960/12

[Ronelle Landy (rlandy)]

https://review.opendev.org/c/openstack/tripleo-ci/+/884324 merged