Auto-add measure-rss to tests when --energy is explicitly set

If the user specifies --energy with a value other than none but
measure-rss is not in the test list, add it automatically since
energy measurement runs during the measure-rss phase.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: holly-cummins

scripts/perf-lab/run-benchmarks.sh

@@ -391,6 +391,7 @@ if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
         ;;
 
       --energy)
+        ENERGY_SET_BY_USER="true"
         ENERGY="$2"
         ENERGY_IDRAC="disabled"
         ENERGY_RAPL="disabled"
@@ -606,6 +607,13 @@ if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
     esac
   done
 
+  # If user explicitly set --energy, ensure measure-rss is in the test list
+  if [[ -n "${ENERGY_SET_BY_USER:-}" && "$ENERGY" != "none" ]]; then
+    if [[ ! "${TESTS_TO_RUN[@]}" =~ "measure-rss" ]]; then
+      TESTS_TO_RUN="$TESTS_TO_RUN measure-rss"
+    fi
+  fi
+
   validate_values
   calculate_scenario
   print_values