[Forwardport] 17516: added Australian states

[VitaliyBoyko]

Description (*)

Added Australian states to module directory.
Original PR: #17516

Manual testing scenarios (*)

1. Navigate to the customer address, or some other places were countries and states are using
2. You should see the list of states when country Australia is selected.
   

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @VitaliyBoyko. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me $VERSION instance - deploy vanilla Magento instance

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[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-3259 has been created to process this Pull Request

[magento-engcom-team]

Hi @VitaliyBoyko. Thank you for your contribution.
We will aim to release these changes as part of 2.3.1.
Please check the release notes for final confirmation.