ci: add known failure cases to the target test report

target test report:
- refactor the methods to ensure reusability
- cover report generation with tests
- introduce a known failure tests block in report
- add grafana link to testcases dashboard

.gitlab/ci/host-test.yml

@@ -394,5 +394,7 @@ test_idf_pytest_plugin:
     reports:
       junit: XUNIT_RESULT.xml
   script:
-    - cd tools/ci/idf_pytest
+    - cd ${IDF_PATH}/tools/ci/dynamic_pipelines/tests/test_report_generator
+    - python -m unittest test_target_test_report_generator.py
+    - cd ${IDF_PATH}/tools/ci/idf_pytest
     - pytest --junitxml=${CI_PROJECT_DIR}/XUNIT_RESULT.xml

.gitlab/ci/rules.yml

@@ -148,6 +148,7 @@
 
 .patterns-idf-pytest-plugin: &patterns-idf-pytest-plugin
   - "tools/ci/idf_pytest/**/*"
+  - "tools/ci/dynamic_pipelines/tests/**/*"
 
 ##############
 # if anchors #