Automation coverage for bz-1973329

[latran]

Automation coverage for https://bugzilla.redhat.com/show_bug.cgi?id=1973329.

I still need to add rhel8_baseos as another repo to the test case, but the implementation is a bit tricky. If I can't figure it out, I may skip it.

[latran]

test result:

pytest tests/foreman/ui/test_contentview.py -k test_positive_able_to_disable_and_enable_rhel_repos

================ 1 passed, 78 deselected, 3 warnings in 318.86s (0:05:18) ================

[latran]

test results:

pytest tests/foreman/ui/test_contentview.py -k test_positive_able_to_disable_and_enable_rhel_repos
========= 1 passed, 78 deselected, 3 warnings in 291.91s (0:04:51) ===================

[latran]

test result

pytest tests/foreman/ui/test_repository.py -k test_positive_able_to_disable_and_enable_rhel_repos

=========== 1 passed, 32 deselected, 3 warnings in 290.10s (0:04:50) ==================