change limit type long to int

[zyxxoo]

No description provided.

[imbajin]

seems I try to change it in server formerly, but suspend for some reason.... @javeme

Update: merge it after the CI PR merged

[codecov]

Codecov Report

Merging #349 (be684ff) into master (6d82b15) will decrease coverage by 28.51%.
The diff coverage is 71.42%.

@@              Coverage Diff              @@
##             master     #349       +/-   ##
=============================================
- Coverage     67.43%   38.92%   -28.52%     
- Complexity      878      966       +88     
=============================================
  Files            86      242      +156     
  Lines          4029     8111     +4082     
  Branches        477      719      +242     
=============================================
+ Hits           2717     3157      +440     
- Misses         1107     4775     +3668     
+ Partials        205      179       -26     

Impacted Files	Coverage Δ
.../baidu/hugegraph/api/traverser/CrosspointsAPI.java	100.00% <ø> (ø)
...om/baidu/hugegraph/api/traverser/KneighborAPI.java	100.00% <ø> (ø)
...ava/com/baidu/hugegraph/api/traverser/KoutAPI.java	100.00% <ø> (ø)
...va/com/baidu/hugegraph/api/traverser/PathsAPI.java	100.00% <ø> (ø)
...baidu/hugegraph/api/traverser/PersonalRankAPI.java	85.96% <ø> (ø)
...ava/com/baidu/hugegraph/api/traverser/RaysAPI.java	100.00% <ø> (ø)
...va/com/baidu/hugegraph/api/traverser/RingsAPI.java	100.00% <ø> (ø)
...aidu/hugegraph/api/traverser/SameNeighborsAPI.java	100.00% <ø> (ø)
...aph/api/traverser/SingleSourceShortestPathAPI.java	100.00% <ø> (ø)
...m/baidu/hugegraph/api/traverser/TraversersAPI.java	88.00% <ø> (ø)
... and 246 more

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