Do not print help when the start command encounters an error

[dwedul-figure]

Summary

Do not print the start command's usage/help when an error is encountered.

Problem Definition

Currently, if an error is encountered while a node is running (or trying to start), the error is printed, then the usage info for the provenanced start command is printed. That usage info is quite verbose (there are lots of flags), and it often pushes the error off of the screen. Additionally, the usage information is rarely useful in that situation since the error usually isn't related to the command used to invoke it, but related to something else with the chain, system or configuration.

Proposal

Add this to the end of func initRootCmd:

	// Disable help when the start command returns an error.
	startCmd, _, err := rootCmd.Find([]string{"start"})
	if err != nil {
		panic(fmt.Errorf("start command not found: %w", err))
	}
	startCmd.SilenceUsage = true

Doing this will still allow provenanced start --help and provenance help start to work as expected. But when you do provenanced start and end up getting an error, it won't print usage info any more.

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned