[6.16.z] cvv incremental update and cv publish duration fix

[Satellite-QE]

Cherrypick of PR: #16169

Problem Statement

1. Content view version incremental update command run via robottelo, it executed successfully but doesn't return anything in stdout.
2. Content view version Incremental update took longer time than publish of entire content-view, Update took significantly more time, 20% or longer, than publish.

update duration: 19.336696 s.
publish duration: 16.057788 s.

Encountering an assertion error for this  
assert ((19.336696 - 16.057788) / 16.057788) <= 0.2
0.20419425141246114 != 0.2

Expected :0.2
Actual   :0.20419425141246114

Solution

1. Used content view version list and check incremental version number
2. Update significance value by 0.05 (on trial and error basis)

• now comparison will happen with 0.25 instread of 0.2

Related Issues

Jira - https://issues.redhat.com/browse/SAT-27517

PRT test Cases example

trigger: test-robottelo
pytest: tests/foreman/longrun/test_inc_updates.py -k 'test_positive_incremental_update_time'

[Satellite-QE]

trigger: test-robottelo
pytest: tests/foreman/longrun/test_inc_updates.py -k 'test_positive_incremental_update_time'

[Satellite-QE]

PRT Result

Build Number: 8439
Build Status: UNSTABLE
PRT Comment: pytest tests/foreman/longrun/test_inc_updates.py -k test_positive_incremental_update_time --external-logging
Test Result : ============ 1 deselected, 7 warnings, 1 error in 152.83s (0:02:32) ============

[vijaysawant]

trigger: test-robottelo
pytest: tests/foreman/longrun/test_inc_updates.py -k 'test_positive_incremental_update_time'

[Satellite-QE]

PRT Result

Build Number: 8482
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/longrun/test_inc_updates.py -k test_positive_incremental_update_time --external-logging
Test Result : =========== 1 passed, 1 deselected, 15 warnings in 956.26s (0:15:56) ===========