Add BUILD OS & Arch to rhel system registration host name

[pdabelf5]

Proposed changes

Add build os & arch to help with troubleshooting system subscription & entitlement issues.

Compared to

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.69%. Comparing base (9344a1a) to head (bfc4b92).
Report is 2 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@ ## main #7895 +/- ## ======================================= Coverage 52.69% 52.69% ======================================= Files 90 90 Lines 21598 21598 ======================================= Hits 11380 11380 Misses 9743 9743 Partials 475 475 

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