ci: add tmt plans and tests for running from gitlab-ci

[mirecheck]

Modernizing CI infrastructure, CI environment configuration is now visible in test plans.

Summary by Sourcery

Modernize CI by replacing legacy linting and unit test jobs with Testing Farm and TMT-based pipelines, introduce plan/test filtering variables, COMPOSE_NAME matrix, and supporting tmt plans and scripts

New Features:

• Add tf_tests job leveraging Testing Farm and TMT for executing CI tests from GitLab

Enhancements:

• Revamp pipeline to use COMPOSE_NAME matrix and introduce CI variables for plan/test filters and FIPS mode
• Implement download and management of Testing Farm artifacts with cancellation logic on CI failure

Build:

• Overhaul .gitlab-ci.yml to remove legacy linting and unit test jobs and integrate Testing Farm workflows

Tests:

• Introduce tmt plans and shell scripts under tmt/plans and tmt/tests for tier1 tests and Python unit tests

Chores:

• Add pylint disable annotations for invalid-name on DACITE_IMPORT_ERROR and PCS_IMPORT_ERROR variables

[sourcery-ai]

Reviewer's Guide

This PR modernizes the GitLab CI by replacing legacy linting and unit test jobs with tmt-based plans executed on Testing Farm, exposes environment configuration through CI variables and matrices, and adds corresponding tmt plan and test definitions.

File-Level Changes

Change	Details	Files
Overhaul of .gitlab-ci.yml to use testing-farm and tmt	Removed legacy Python, linter and tier1 trigger jobs Added new CI variables for FIPS, plan/test filters, TFCLI settings Defined a .parallel matrix on COMPOSE_NAME with per-compose variable rules Implemented tf_tests job using testing-farm request with output capture Introduced download_artifacts_from_tf anchor and after_script cancellation logic	.gitlab-ci.yml
Added tmt plans and test orchestration scripts	Created tmt/tests scripts for tier1 tests, test list validation, and Python unit tests Added playbook_setup_configs.yml to configure ansible/pcsd in tmt plans Added FMF metadata files under tmt/plans and tmt/tests to define plan and test suites	tmt/tests/run_tier1_test.sh tmt/tests/check_tier1_test_list.sh tmt/tests/python_unit_tests.sh tmt/plans/ansible_versions/playbook_setup_configs.yml tmt/plans/ansible_versions/ansible_29.fmf tmt/plans/ansible_versions/ansible_current.fmf tmt/plans/ansible_versions/main.fmf tmt/plans/main.fmf tmt/tests/ignore_tests_file_rhel-8.txt tmt/tests/linters.fmf tmt/tests/main.fmf tmt/tests/python_unit_tests.fmf tmt/tests/tier1.fmf
Disabled pylint naming warnings for imported error constants	Added # pylint: disable=invalid-name comment on DACITE_IMPORT_ERROR and PCS_IMPORT_ERROR assignments	module_utils/ha_cluster_lsr/pcs_api_v2_utils.py library/pcs_api_v2.py library/pcs_qdevice_certs.py

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[sourcery-ai]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.08%. Comparing base (fab3254) to head (ae6805b).
⚠️ Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #321      +/-   ##
==========================================
+ Coverage   88.32%   89.08%   +0.75%     
==========================================
  Files          11       13       +2     
  Lines         891      980      +89     
==========================================
+ Hits          787      873      +86     
- Misses        104      107       +3     

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