Arm backend: Output pytest report in trunk jobs (#19555)

When a pytest report is output to $RUNNER_TEST_RESULTS_DIR, the
linux_job_v2.yml workflow can pick it up and
surface it in github ci.

Author: Erik-Lundell

.github/workflows/trunk.yml

@@ -380,6 +380,11 @@ jobs:
 
         ARM_TEST=${{ matrix.test_arm_baremetal }}
 
+        # Output test report on pytest runs so that github can surface failing tests.
+        if [[ -n "${RUNNER_TEST_RESULTS_DIR:-}" ]]; then
+              export PYTEST_ADDOPTS="--junit-xml=${RUNNER_TEST_RESULTS_DIR}/${ARM_TEST}.xml ${PYTEST_ADDOPTS:-}"
+        fi
+
         # Test test_arm_baremetal.sh with test
         backends/arm/test/test_arm_baremetal.sh "${ARM_TEST}"
 
@@ -415,6 +420,11 @@ jobs:
 
         ARM_TEST=${{ matrix.test_arm_baremetal }}
 
+        # Output test report on pytest runs so that github can surface failing tests.
+        if [[ -n "${RUNNER_TEST_RESULTS_DIR:-}" ]]; then
+          export PYTEST_ADDOPTS="--junit-xml=${RUNNER_TEST_RESULTS_DIR}/${ARM_TEST}.xml ${PYTEST_ADDOPTS:-}"
+        fi
+
         backends/arm/test/test_arm_baremetal.sh "${ARM_TEST}"
 
   test-arm-ootb-linux: