Add basic-auth configuration for Kafka Connect

[NiyiOdumosu]

Is your feature request related to a problem? Please describe.
Currently, Julie-Ops does not allow customers to authenticate to Kafka Connect with basic authentication (i.e. connectors.basic.auth=username:password)

Describe the solution you'd like
I would like the KafkaConnect class to support basic auth connection to the Kafka Connect cluster so that customers can deploy connectors with this authentication mechanism.

Describe alternatives you've considered
The other alternatives for container orchestration systems (such as Kubernetes) require a Network Policy for the connect pod that limits traffic to the other Kafka components because they cannot use basic-auth to establish a secure connection with the connect cluster.

Additional context
Add any other context or screenshots about the feature request here.

[purbon]

Hi @NiyiOdumosu thanks for your proposal here. I think this would be a good addition. However for now I still see a way to get that you aim here.

You would normally define the URL for the connect cluster something like this:

platform.servers.connect.0=connect:http://example.com:18083

however, when requiring basic auth, you might like to do it something like this:

platform.servers.connect.0=connect:http://username:password@example.com:18083

I know this is a workaround, but would certainly allow you to move forward with any basic auth requirement.

[NiyiOdumosu]

Thanks Pere! I will let our customer know this.

[purbon]

It looks like java11 http client does not pass URL basic auth parameters, one need to pass them directly. I just merged #339 and released under v3.0.2 ... this is fixing an basic auth problem with connect.

[NiyiOdumosu]

@purbon this is perfect! Thanks so much for finding the time to add this feature. Our clients will be extremely happy!