[6.14.z] CP of API-Errata modifications

[damoore044]

Failed cherry-pick into 6.14.z of #13515 from master.
Failed auto-CP merge request: #13828

Specific 6.14.z differences from 6.15 and master PRs:

The new case test_positive_incremental_update_apply_to_envs_cvs[rhel8_contenthost0],
was only planned and merged for 6.15.z+, is not included in these changes.

To fix test_errata_installation_with_swidtags:
Setup now with global registration host, using custom ak cv and repos (including settings.repos.swid_tag)
Now, we have the repositories with swid tags properly synced to the contenthost.
I will open a follow-up pr to extend these swidtag test fixes into master/6.15 (failing for same reason).

PRT case:

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[lhellebr]

Well this is just a cherrypick so not much to review, but PRT failed, please investigate.

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[ogajduse]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[Satellite-QE]

PRT Result

Build Number: 5875
Build Status: UNSTABLE
PRT Comment: pytest tests/foreman/api/test_errata.py --external-logging
Test Result : ======= 6 failed, 7 passed, 750 warnings, 2 errors in 3317.65s (0:55:17) =======

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[Satellite-QE]

PRT Result

Build Number: 6138
Build Status: UNSTABLE
PRT Comment: pytest tests/foreman/api/test_errata.py --external-logging
Test Result : =========== 1 failed, 11 passed, 2400 warnings in 5102.74s (1:25:02) ===========

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[Satellite-QE]

PRT Result

Build Number: 6156
Build Status: UNSTABLE
PRT Comment: pytest tests/foreman/api/test_errata.py --external-logging
Test Result : ======================== 12 errors in 243.96s (0:04:03) ========================

This was a failed build, unrelated to this test module.

[Satellite-QE]

PRT Result

Build Number: 6157
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/api/test_errata.py --external-logging
Test Result : ================ 12 passed, 2402 warnings in 5103.10s (1:25:03) ================

[damoore044]

trigger: test-robottelo
pytest: tests/foreman/api/test_errata.py

[Satellite-QE]

PRT Result

Build Number: 6168
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/api/test_errata.py --external-logging
Test Result : ================ 12 passed, 2376 warnings in 5117.80s (1:25:17) ================