fix default argusedtokens

[mjaow]

Describe what this PR does / why we need it

fix default value (-1 -> 0) of arg_used_tokens

Does this pull request fix one issue?

Fixes #459

Describe how you did it

fix default value -1 to 0

Describe how to verify it

CI

Special notes for reviews

[codecov-io]

Codecov Report

Merging #460 into master will increase coverage by 3.12%.
The diff coverage is 50%.

@@             Coverage Diff              @@
##             master     #460      +/-   ##
============================================
+ Coverage     37.66%   40.79%   +3.12%     
- Complexity      983     1097     +114     
============================================
  Files           235      236       +1     
  Lines          7429     7570     +141     
  Branches       1017     1050      +33     
============================================
+ Hits           2798     3088     +290     
+ Misses         4271     4083     -188     
- Partials        360      399      +39

Impacted Files	Coverage Δ	Complexity Δ
...slots/block/flow/controller/DefaultController.java	62.5% <50%> (ø)	6 <0> (ø)	⬇️
...nel/slots/block/flow/param/ParamFlowException.java	42.85% <0%> (-19.65%)	3% <0%> (ø)
...inel/slots/block/authority/AuthorityException.java	30% <0%> (-12.86%)	2% <0%> (ø)
...sp/sentinel/slots/system/SystemBlockException.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
...inel/cluster/flow/rule/ClusterFlowRuleManager.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
...tinel/init/ParamFlowStatisticSlotCallbackInit.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
...in/java/com/alibaba/csp/sentinel/util/PidUtil.java	100% <0%> (ø)	1% <0%> (ø)	⬇️
...sentinel/slots/block/degrade/DegradeException.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
...ots/statistic/ParamFlowStatisticEntryCallback.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
...lots/statistic/ParamFlowStatisticExitCallback.java	0% <0%> (ø)	0% <0%> (?)
... and 22 more

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[mjaow]

fix is done

[sczyh30]

LGTM

[sczyh30]

Thanks for contributing!