Update ACS validation messages

[vsedmik]

Problem Statement

1. ACS validation messages have changed (just the case).
2. The original or was used in the beginnings when it differed in stream and z-streams and we wanted both to pass. Now only the second one is appropriate.

Solution

Update the messages to what we have in stream today.

PRT test Cases example

trigger: test-robottelo
pytest: tests/foreman/cli/test_acs.py -k 'test_negative_check_custom_rhui_validations or test_negative_check_simplified_validations'

[vsedmik]

trigger: test-robottelo
pytest: tests/foreman/cli/test_acs.py -k 'test_negative_check_custom_rhui_validations or test_negative_check_simplified_validations'

[Satellite-QE]

PRT Result

Build Number: 9137
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/cli/test_acs.py -k test_negative_check_custom_rhui_validations or test_negative_check_simplified_validations --external-logging
Test Result : ========== 4 passed, 10 deselected, 48 warnings in 576.01s (0:09:36) ===========

[LadislavVasina1]

LGTM