Fix broctl failing tests and error message output

Description

After broker was merged into master, I noticed some broctl tests were failing but the output didn't indicate any reason for why the tests failed. This is due to some broctl commands not sending error messages to stderr. Also, the error messages are in some cases not explaining the actual error very clearly.

Environment

None

Assignee

Jon Siwek

Reporter

Daniel Thayer

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Components

Fix versions

Priority

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