split travis test into two stages: core and tinkerpop

[javeme]

fix: #737
Change-Id: Ieee707a9c7794dde58013539d5465e0d313169ff

[codecov]

Codecov Report

Merging #738 into master will increase coverage by 2.3%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             master     #738     +/-   ##
===========================================
+ Coverage     70.76%   73.06%   +2.3%     
- Complexity     4300     4423    +123     
===========================================
  Files           281      281             
  Lines         20764    20764             
  Branches       2925     2925             
===========================================
+ Hits          14693    15171    +478     
+ Misses         4625     4142    -483     
- Partials       1446     1451      +5

Impacted Files	Coverage Δ	Complexity Δ
...a/com/baidu/hugegraph/backend/query/Condition.java	78% <0%> (-0.42%)	31% <0%> (ø)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	80.58% <0%> (-0.4%)	179% <0%> (ø)
...n/java/com/baidu/hugegraph/task/TaskScheduler.java	70.61% <0%> (ø)	45% <0%> (+1%)	⬆️
...va/com/baidu/hugegraph/backend/cache/RamCache.java	73.72% <0%> (+0.39%)	51% <0%> (+1%)	⬆️
...idu/hugegraph/schema/builder/EdgeLabelBuilder.java	89.16% <0%> (+0.49%)	60% <0%> (ø)	⬇️
.../baidu/hugegraph/backend/tx/SchemaTransaction.java	86.8% <0%> (+0.5%)	66% <0%> (+1%)	⬆️
...u/hugegraph/schema/builder/PropertyKeyBuilder.java	88.8% <0%> (+0.74%)	46% <0%> (ø)	⬇️
...graph/backend/store/cassandra/CassandraTables.java	88% <0%> (+0.85%)	1% <0%> (ø)	⬇️
...in/java/com/baidu/hugegraph/backend/id/EdgeId.java	79.77% <0%> (+1.12%)	35% <0%> (+1%)	⬆️
...du/hugegraph/schema/builder/IndexLabelBuilder.java	90.32% <0%> (+1.2%)	88% <0%> (+1%)	⬆️
... and 31 more

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