template[sh-py] --> production standard 8 --usage

[BradleyA]

add display_usage function to display_help so users only needing usage help (me) can receive it without pages of display_help

options: --usage, -usage, usage, -u

[BradleyA]

completed for template.sh, reopening for template.py

[BradleyA]

This design change is in support of the new production standard 9.0 Parse CLI options and arguments section which allow option to be used in any order.

### production standard 8.3.2XX --usage
display_usage() {
COMMAND_NAME=$(echo $0 | sed 's/^.*\///')
echo -e "\n${NORMAL}${0}\n   brief description . . ."
echo -e "\nUSAGE"
echo -e "   ${COMMAND_NAME} [-c <CLUSTER>] [-d <DATA_DIR>] [-a <ADMUSER>] [-f <PATH>/<FILE_NAME>]\n"
echo    "   ${COMMAND_NAME} [--help | -help | help | -h | h | -?]"
echo    "   ${COMMAND_NAME} [--usage | -usage | -u]"
echo    "   ${COMMAND_NAME} [--version | -version | -v]"
}