fix(ctl): ignore post checks for completion and version modes

[iamjoemccormick]

What does this PR do / why do we need it?

Required for all PRs.

Ignore post checks for completion and version modes. In particular having these checks on the completion mode meant TLS had to be configured for package builds. Also:

• Clarify related errors to simplify troubleshooting.
• Fixes a bug where the top level help command required root access.

Related Issue(s)

Required when applicable.

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Checklist before merging:

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[swartzn]

LGTM!