Binary: Extract tracing setup into function

[mkroening]

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[mkroening]

bors r+

[codecov]

Codecov Report

Merging #262 (f4f7e20) into master (36c04bd) will increase coverage by 0.20%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #262      +/-   ##
==========================================
+ Coverage   63.25%   63.45%   +0.20%     
==========================================
  Files          16       16              
  Lines        2449     2441       -8     
==========================================
  Hits         1549     1549              
+ Misses        900      892       -8     

Impacted Files	Coverage Δ
src/bin/uhyve.rs	0.46% <0.00%> (+0.01%)	⬆️

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[bors]

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