Make getJobAuthDigest() public

[alexh-sauce]

getJobAuthDigest() is needed by the Jenkins plugin.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.22%. Comparing base (c82e27b) to head (d862ee1).

Additional details and impacted files

@@              Coverage Diff              @@
##             master     #417       +/-   ##
=============================================
+ Coverage     57.99%   74.22%   +16.22%     
- Complexity      203      259       +56     
=============================================
  Files            25       25               
  Lines           869      869               
  Branches         63       63               
=============================================
+ Hits            504      645      +141     
+ Misses          327      175      -152     
- Partials         38       49       +11     

Flag	Coverage Δ
integrationtests	56.50% <ø> (-1.50%)	⬇️
tests	74.22% <ø> (+16.22%)	⬆️
unittests	36.36% <ø> (?)

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