Add logs on RabbitMQ connection error

[cfeltz34]

Sometime, the connection with RabbitMQ doesn't work (bad passwork or bad network connection for example)
But there are no logs nowhere.
Please, can you add some logs ?

[amodelbello]

@cfeltz34 The status indicator on the node itself should show whether or not the node has successfully connected. Are you able to elaborate more on the use case/need for logs here?

[codepoetza]

I found that when getting up and running with the flow, it's not clear whether the component is actually doing anything while it's encountering a connection issue. I've implemented a change locally to display an additional "Connecting..." status to indicate that something is happening at least. A debug error would also be helpful; however, the auto-retry is rapid, and so the log may get flooded with errors. Perhaps depending on the type of error – e.g. SSL, or auth failure, or host connection refused should log an error and stop reconnecting until a restart, while connection timeouts or closures should enter the Retry loop with the "Connecting..." label.