Add a client for sending internal events

[t-persson]

Applicable Issues

eiffel-community/etos-api#91

Description of the Change

This is the client that should be used together with the SSE v2 server
Also updated the rabbitmq log handler to send using this client instead
The logger will now publish all logs, not only user logs. In the ETOS client we will filter away all logs that are on the debug level, so this should eventually be fine.
This change requires the log_listener to be updated to support RabbitMQ streams when running ETOS v0.

Alternate Designs

I want etosV0 to still work, but this change will break it until the log listener in the suite runner repository is updated.
The complexity in this change would be higher than I would like if we were to support both ways.

Possible Drawbacks

The new RabbitMQ library used here is unproven in an ETOS environment and I suspect we will see a few issues with it. I could not find a way to get pika to do this for us.

Sign-off

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Signed-off-by: Tobias Persson [email protected]