AMQP connector - default AmqpClientOptions configured by cdi

[famarting]

Related to the work done here #352 there is an optional missing detail that could improve a bit more the usability in regards to ease of configuration of the amqp connector.

The initial work done allows to configure via CDI a channel, providing the name of an AmqpClientOptions named bean, so to configure the amqp connection via CDI the user must set the property client-options-name in every channel configuration.

This issue is intended to discuss how to define a default AmqpClientOptions via cdi that applies by default to all amqp channels, in case we are interested in doing that. I have 3 ideas to do so:

• have a config property amqp-client-options-name at global level, similar to amqp-host, that points to the name of an AmqpClientOptions named bean
• look for an AmqpClientOptions named bean named "default" or whatever other name we come up with
• create an special qualifier annotation like @DefaultAmqpConfiguration to indicate that