Merge branch 'feature/ci_runner_failure_retries' into 'master'

ci: runner system failure retries

See merge request espressif/esp-idf!15656

.gitlab-ci.yml

@@ -115,6 +115,12 @@ before_script:
     - export PYTHONPATH="$IDF_PATH/tools:$IDF_PATH/tools/ci/python_packages:$PYTHONPATH"
     - fetch_submodules
 
+default:
+  retry:
+    max: 2
+    # In case of a runner failure we could hop to another one, or a network error could go away.
+    when: runner_system_failure
+
 include:
   - '.gitlab/ci/rules.yml'
   - '.gitlab/ci/docs.yml'

.gitlab/ci/target-test.yml

@@ -341,7 +341,6 @@ test_app_test_003:
 
 test_app_test_004:
   extends: .test_app_esp32s2_template
-  parallel: 4
   tags:
     - ESP32S2
     - Example_GENERIC