fix test case failed

[kevindiu]

[codecov-io]

Codecov Report

Merging #34 into master will not change coverage. The diff coverage is 100%.

@@           Coverage Diff           @@
##           master      #34   +/-   ##
=======================================
  Coverage   87.39%   87.39%           
=======================================
  Files          14       14           
  Lines         690      690           
=======================================
  Hits          603      603           
  Misses         59       59           
  Partials       28       28

Impacted Files	Coverage Δ
service/token.go	89.87% <100%> (ø)	:arrow_up:

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[WindzCUHK]

new PR with git cherry-pick, continue in https://github.com/AthenZ/garm/pull/4