Add timeout to test jobs to prevent hanging docker containers (#15078)

Some of the test jobs are hanging - either becasue of some
weird race conditions in docker or because the test hangs (happens
for quarantined tests). This change add maximum timeout we let
the test suite execute to 25 minutes.

scripts/ci/testing/ci_run_airflow_testing.sh

@@ -160,9 +160,10 @@ function run_test_types_in_parallel() {
         mkdir -p "${PARALLEL_MONITORED_DIR}/${SEMAPHORE_NAME}/${TEST_TYPE}"
         export JOB_LOG="${PARALLEL_MONITORED_DIR}/${SEMAPHORE_NAME}/${TEST_TYPE}/stdout"
         export PARALLEL_JOB_STATUS="${PARALLEL_MONITORED_DIR}/${SEMAPHORE_NAME}/${TEST_TYPE}/status"
+        # Each test job will get SIGTERM followed by SIGTERM 200ms later and SIGKILL 200ms later after 25 mins
         # shellcheck disable=SC2086
         parallel --ungroup --bg --semaphore --semaphorename "${SEMAPHORE_NAME}" \
-            --jobs "${MAX_PARALLEL_TEST_JOBS}" \
+            --jobs "${MAX_PARALLEL_TEST_JOBS}" --timeout 1500 \
             "$( dirname "${BASH_SOURCE[0]}" )/ci_run_single_airflow_test_in_docker.sh" "${@}" >${JOB_LOG} 2>&1
     done
     parallel --semaphore --semaphorename "${SEMAPHORE_NAME}" --wait