Warning message when SSH connection from Trento Server host to Trento Agent host doesn't work

[abravosuse]

The following is an enhancement suggestion, not a bug.

Given that, by design, SSH access must be properly configured from the the Trento Server host to the Trento Agent host for the runner to be able to run the cluster checks in the agent host, it would be helpful that the console shows in the Cluster Settings window a message confirming whether the SSH connection, with the chosen connection user, works or not:

[arbulu89]

Hey @abravosuse ,
We have a similar thing already implemented this way: #343
It is not super, but it gives some information at least

[abravosuse]

Cool, it's a good step forward!