Add test checking needs publish banner on cv index page

[sambible]

Problem Statement

Test supporting this Customer Issue: https://issues.redhat.com/browse/SAT-28271

Solution

Adds a test validating this issue+

Related Issues

Requires Airgun PR: SatelliteQE/airgun#1653

[LadislavVasina1]

@sambible To which branches do you want this PR to be merged?

[vsedmik]

Codewisely looks good, one question and PRT pending.

[vsedmik]

Shouldn't the logic be the opposite? The "no changes" warning displayed after publish, not before?

Suggested change

	result = session.contentview_new.check_publish_banner(cv.name)
	assert result
	cv.publish()
	result2 = session.contentview_new.check_publish_banner(cv.name)
	assert not result2
	result = session.contentview_new.check_publish_banner(cv.name)
	assert not result
	cv.publish()
	result2 = session.contentview_new.check_publish_banner(cv.name)
	assert result2

[vsedmik]

trigger: test-robottelo
pytest: tests/foreman/ui/test_contentview.py -k test_cv_publish_warning
airgun: 1653

[Satellite-QE]

PRT Result

Build Number: 9674
Build Status: UNSTABLE
PRT Comment: pytest tests/foreman/ui/test_contentview.py -k test_cv_publish_warning --external-logging
Test Result : =========== 1 failed, 7 deselected, 17 warnings in 649.18s (0:10:49) ===========

[sambible]

trigger: test-robottelo
pytest: tests/foreman/ui/test_contentview.py -k test_cv_publish_warning
airgun: 1653

[Satellite-QE]

PRT Result

Build Number: 9887
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/ui/test_contentview.py -k test_cv_publish_warning --external-logging
Test Result : =========== 1 passed, 7 deselected, 17 warnings in 754.04s (0:12:34) ===========