Fix the following tests: 

• test_end_to_end: intermittent failure finding correct repo with content, fixture enhancement
• test_host_content_errata_tab_pagination: fix intermittent failure finding updated pagination, refresh the view's page.
• test_positive_apply_for_all_hosts: fixed, Airgun #1387
• test_positive_filter_by_environment: setup/fixture fixes
• test_positive_content_host_previous_env: fixed, but skipped for now while BZ 2280882 is open
• test_content_host_errata_search_commands: setup/fixture fixes
• test_positive_filtered_errata_status_installable_param: setup/fixture fixes

Latest PRT Result:

UI::test_errata.py (18 Tests): Build 7391
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/ui/test_errata.py --external-logging
Test Result : ========== 17 passed, 1 skipped, 1975 warnings in 6187.58s (1:43:07) ===========