Description of problem:

When the --chart-dir flag is not set for the mta-cli generate command, it displays an incorrect error message.
$ mta-cli generate helm --chart-dir --input /tmp/discovery.yaml --output-dir /tmp/deployment
Error: required flag(s) "input" not set

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

$ mta-cli version
version: 7.3.0
SHA: 503b861109b34be42dcb362c805099d170790398
image: registry.redhat.io/mta/mta-cli-rhel9:7.3.0

How reproducible:

Always

Steps to Reproduce:

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Actual results:

Incorrect error message displayed when --chart-dir is not set for generate command

Expected results:

A more appropriate message such as this should be displayed.
Error: required flag(s) "chart-dir" not set

Additional info: