[6.11.z] UI Utils module depreciation and new ui_factory module

[Satellite-QE]

Cherrypick of PR: #12225

• Depreciating UI Utils module, removed UI utils file and package!
• Introduced new ui_factory attribute to satellite class, returns the UIFactory class object containing all the UI Factory methods.
  So now this could be used as target_sat.ui_factory.ui_method()
• Impacted test modules changed to use ui_factory methods.

[Satellite-QE]

trigger: test-robottelo
pytest: tests/foreman/ui/test_reporttemplates.py -k test_positive_generate_registered_hosts_report

[Gauravtalreja1]

trigger: test-robottelo
pytest: tests/foreman/ui/test_reporttemplates.py -k test_positive_generate_registered_hosts_report

[Gauravtalreja1]

@jyejare we're not supposed to cherrypick anything to this branch. PRT is failing with checks, so are you going to work on this PR?

[jyejare]

@Gauravtalreja1 Yeah! I mean we have cli and API factory changes made in 6.11 and I dont want to miss just ui factory changes. Will fix and update !

[jyejare]

trigger: test-robottelo
pytest: tests/foreman/ui/test_host.py

[devendra104]

trigger: test-robottelo
pytest: tests/foreman/ui/test_host.py

[jyejare]

@Gauravtalreja1 The required changes are updated to fix the CI checks tests collection and PRT is ran. PRT failures are not related to the change made in this PR !