build: reduce download junk in log files

[yoshi-automation]

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[codecov]

Codecov Report

Merging #49 (903854a) into master (25770e4) will decrease coverage by 0.23%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master      #49      +/-   ##
============================================
- Coverage     71.83%   71.59%   -0.24%     
  Complexity      177      177              
============================================
  Files            24       24              
  Lines          1278     1278              
  Branches          7        7              
============================================
- Hits            918      915       -3     
- Misses          349      350       +1     
- Partials         11       13       +2     

Impacted Files	Coverage Δ	Complexity Δ
...m/google/cloud/retail/v2/CatalogServiceClient.java	64.81% <0.00%> (-1.86%)	12.00% <0.00%> (ø%)
...m/google/cloud/retail/v2/ProductServiceClient.java	63.63% <0.00%> (-1.52%)	25.00% <0.00%> (ø%)
...oud/retail/v2/stub/CatalogServiceStubSettings.java	76.47% <0.00%> (-0.99%)	12.00% <0.00%> (ø%)

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