[6.15.z] Updates for CV component eval

[Satellite-QE]

Cherrypick of PR: #15043

Problem Statement

CV component eval proposes several changes to be done for content view tests.

Solution

This PR addresses some of them, mostly merges and some minor modifications. In particular:

1. test_positive_remove_cv_version_from_env is merged with test_positive_remove_cv_version_from_multi_env
2. test_positive_promote_with_docker_repo_composite is merged with test_positive_promote_multiple_with_docker_repo_composite
3. test_positive_add_custom_repo_by_name is parametrized for adding repo by id and incorrect BZ reference is removed
4. test_negative_update_with_name another test case where incorrect BZ reference is removed
5. test_positive_arbitrary_file_sync_over_capsule is removed since it is already implemented in test_positive_sync_file_repo
6. test_positive_restart_dynflow_publish and test_positive_restart_dynflow_promote are removed since they represent obsolete workflows nowadays

PRT test Cases example

trigger: test-robottelo
pytest: tests/foreman/cli/test_contentview.py -k 'test_positive_add_custom_repo_by or test_positive_remove_cv_version_from_multi_env and not capsule'

[Satellite-QE]

trigger: test-robottelo
pytest: tests/foreman/cli/test_contentview.py -k 'test_positive_add_custom_repo_by or test_positive_remove_cv_version_from_multi_env and not capsule'

[Satellite-QE]

PRT Result

Build Number: 7217
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/cli/test_contentview.py -k test_positive_add_custom_repo_by or test_positive_remove_cv_version_from_multi_env and not capsule --external-logging
Test Result : ========= 3 passed, 112 deselected, 145 warnings in 934.79s (0:15:34) ==========