magento/magento2#8863: Malta zipcode validation incomplete

[mmacinko]

Added one more pattern in Malta countryCode nod

Description

Added one more pattern and changed order of all others in MT zip codes list, here:
app/code/Magento/Directory/etc/zip_codes.xml on line 280
<code id="pattern_1" active="true" example="ABC 1234">^[a-zA-Z]{3}\s[0-9]{4}$</code>

Fixed Issues (if relevant)

1. magento/magetno2#8863: Malta zipcode validation incomplete

Manual testing scenarios

1. go to cart or checkout and insert ABC 1234. Validation pass.

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-cicd2]

All committers have signed the CLA.

[okorshenko]

@mmacinko thank you for your contribution!