test: clean up the acceptance tests

[djgilcrease]

• Reduce the number of docker files
• Add additional arch testing
• Clean up the test code to reduce the duplication
• Add a test that covers the example in Deep copy for directories #285
• Make the acceptance tests run in parallel for each type [deb, apk, rpm]
• Finish refactoring rpm specific tests
• Finish refactoring deb specific tests

closes #285

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[codecov]

Codecov Report

Merging #292 (6f26b08) into master (7701bb9) will decrease coverage by 0.23%.
The diff coverage is 89.18%.

@@            Coverage Diff             @@
##           master     #292      +/-   ##
==========================================
- Coverage   70.21%   69.97%   -0.24%     
==========================================
  Files           9        9              
  Lines        1138     1149      +11     
==========================================
+ Hits          799      804       +5     
- Misses        209      213       +4     
- Partials      130      132       +2     

Impacted Files	Coverage Δ
internal/glob/glob.go	78.94% <71.42%> (-2.88%)	⬇️
nfpm.go	85.32% <93.10%> (-1.09%)	⬇️
files/files.go	95.89% <100.00%> (ø)
apk/apk.go	70.04% <0.00%> (-0.43%)	⬇️
deb/deb.go	66.11% <0.00%> (-0.34%)	⬇️

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[github-actions]

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