Description of problem:
hosted-engine $command --help or teach --help to show all options.

# hosted-engine --deploy --help
Usage: /usr/share/ovirt-hosted-engine-setup/scripts/ovirt-hosted-engine-setup
        --config-append=file
                Load extra configuration files.
        --generate-answer=file
                Generate answer file.

is bizzare syntax. no sane command line application uses such syntax, especially comment is... how would one know it should be written like this?

* '--deploy' is an option

So either teach --help to show all possible option and inform user that it is a kind of "suboption" of another option (lol), or better change "commands" into command syntax like git does it.

* git --help commit ...or... git commit --help

thus

* hosted-engine --help ...or... hosted-engine deploy --help / hosted-engine --help deploy


Version-Release number of selected component (if applicable):
is24.2

How reproducible:
100%

Steps to Reproduce:
1. how would you know there's "config-append" option for hosted-engine (??) [no source reading please!]
2.
3.

Actual results:
--help hides all options and/or --help usage/hosted-engine's options are syntactically bizzare

Expected results:
sane style

Additional info: