[liqoctl] improve liqoctl version error message

[claudiolor]

Description

This patch improves the returned error message when it is not possible to retrieve the version of the Liqo server, by changing the error type from ERROR to WARNING, as an error is expected when there is no remote cluster with Liqo installed. Moreover, it clarifies that the error is related to the version of the Liqo instance running in the cluster and provides a set reasons why an error is produced.

Before

After

[adamjensenbot]

Hi @claudiolor. Thanks for your PR!

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Make sure this PR appears in the liqo changelog, adding one of the following labels:

• feat: 🚀 New Feature
• fix: 🐛 Bug Fix
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[fra98]

/rebase test=true

[fra98]

/merge