message: indexer-agent: Only log yargs.help on yarg input errors
diff: @@ -4,5 +4,17 @@ yargs
  .scriptName('indexer-agent')
  .env('INDEXER_AGENT')
  .command(require('./commands/start').default)
  + .fail(function(msg, err, yargs) {
  + if (err) {
  + console.error(err)
  + } else {
  + console.error(msg)
  + console.error(`
  +Usage help...
  +`)
  + console.error(yargs.help())
  + }
  + process.exit(1)
  + })
  .demandCommand(1, 'Choose a command from the above list')
  .help().argv
  