[6.15.z] Docker repos now support on demand policy

[Satellite-QE]

Cherrypick of PR: #14608

Problem Statement

for katello >= 4.4 (should be part of 6.15.z) docker supports on demand policy
Katello/katello@d2c20af

Solution

add exception for docker repos

test

tests/foreman/api/test_repository.py::TestRepository::test_negative_create_non_yum_with_download_policy

[Satellite-QE]

trigger: test-robottelo
pytest: tests/foreman/api/test_repository.py::TestRepository::test_negative_create_non_yum_with_download_policy

[Satellite-QE]

PRT Result

Build Number: 6291
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/api/test_repository.py::TestRepository::test_negative_create_non_yum_with_download_policy --external-logging
Test Result : ================== 4 passed, 26 warnings in 720.30s (0:12:00) ==================