fix: fix command aliases

[mouchar]

Motivation

Attempt to use built-in bash completion provided by cobra package fails on invalid shell expressions. During investigation I noticed it is caused by declaring empty strings ("") as command aliases. Fortunately, command aliases are passed as variadic arguments so fix is very simple and doesn't require substantial changes.

Modifications

• I removed pointless empty ("") aliases as they break bash completion
• I remove aliases that are the same as primary command name
• I aligned cmdutils.NewResourceCmd parameters in test_help.go to match call parameters in their respective Command functions.

Verifying this change

• [ ] Make sure that the change passes the CI checks.

This change is a trivial rework / code cleanup without any test coverage.

Documentation

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My changes do not modify logic or public command-line interface.

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