run_load_test.sh now gens default test profile
add echo_if_verbose & cat_if_verbose to util.sh
run_load_tests.sh command line arg -v|--verbose
add linty -v warnings to run_load_test.sh
add platform_safe_mktemp to util.sh
run_load_test.sh starts using platform_safe_mktemp
add echo_to_stderr to util.sh
start using echo_to_stderr in run_load_test.sh