Adding Almalinux support

[mattd-krystal]

Description

Adding additional var files to support Almalinux flavours

Related Issue

Fixing issue: #220

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• I have read the CONTRIBUTING document.
• I have run the pre-merge tests locally and they pass.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

I don't think these require tests nor any documentation updates, as these are a carbon copy of the centos-8 & centos-9 var files already present with the names changed to be used for Almalinux during the detection phase