CICD: fix package signing issues

[onetechnical]

Summary

Issues in some of the pipelines was preventing a clean end to end build. This PR makes the following changes:

• Fix issues in debian and rpm package building pipelines
• Shift rpm signing to build instead of rpm repository update step
• Explicitly enable ARM64 and disable ARM32
• Cleanup of some parameters passed to build stages
• Removed alphanet from some build processes

Test Plan

Manual testing around building and signing

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1747aba) 55.23% compared to head (2ac8b2a) 55.95%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5934      +/-   ##
==========================================
+ Coverage   55.23%   55.95%   +0.72%     
==========================================
  Files         478      478              
  Lines       67569    67569              
==========================================
+ Hits        37319    37811     +492     
+ Misses      27660    27197     -463     
+ Partials     2590     2561      -29     

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