Changed to accept a test address to bind

[morellik]

Pull Request Checklist

• [ x] Have you read How to write the perfect pull request?
• [ x] Have you read through the contributor guidelines?
• [x ] Have you signed the Lightbend CLA?
• [x ] Have you referenced any issues you're fixing using commit message keywords?
• [ x] Have you added copyright headers to new files?
• [x ] Have you checked that both Scala and Java APIs are updated?
• [x ] Have you updated the documentation for both Scala and Java sections?
• [x ] Have you added tests for any changed functionality?

Fixes

Fixes #10927

Purpose

Allow changing address to bind to

[lightbend-cla-validator]

At least one commit author ([email protected]) is not linked to a user. See https://help.github.com/en/articles/why-are-my-commits-linked-to-the-wrong-user#commits-are-not-linked-to-any-user

[morellik]

Done

[PromanSEW]

Should be targeted to main branch instead Also I don't understand why GitHub did not add link issue to "Successfully merging this pull request may close these issues" block...

[mkurz]

@morellik thank you very much, however I merged #11509 instead which also contained tests and docs updates.