Increase smoke test timeout from 240 to 300 sec

The 840 smoke test (k8s + npc) sometimes might take longer than 240 sec.

test/run_all.sh

@@ -23,4 +23,4 @@ if [ -n "$CIRCLECI" -o -n "$PARALLEL" ]; then
     RUNNER_ARGS="$RUNNER_ARGS -parallel"
 fi
 
-HOSTS="$HOSTS" "${DIR}/../tools/runner/runner" -timeout=240 $RUNNER_ARGS $TESTS
+HOSTS="$HOSTS" "${DIR}/../tools/runner/runner" -timeout=300 $RUNNER_ARGS $TESTS