Fix line retainAll doesn't modify names and values array

[Linary]

Change-Id: I383b3b20a162816098aa8ee8468e8255b3553fdc

[Linary]

fix #108

[codecov]

Codecov Report

Merging #110 into master will increase coverage by 0.22%.
The diff coverage is 95.83%.

@@             Coverage Diff              @@
##             master     #110      +/-   ##
============================================
+ Coverage     74.71%   74.93%   +0.22%     
+ Complexity      611      609       -2     
============================================
  Files            63       63              
  Lines          2349     2346       -3     
  Branches        248      246       -2     
============================================
+ Hits           1755     1758       +3     
+ Misses          442      436       -6     
  Partials        152      152

Impacted Files	Coverage Δ	Complexity Δ
...baidu/hugegraph/loader/builder/ElementBuilder.java	91.08% <100%> (ø)	32 <0> (ø)	⬇️
...baidu/hugegraph/loader/reader/jdbc/RowFetcher.java	84.14% <100%> (+0.19%)	14 <0> (ø)	⬇️
...n/java/com/baidu/hugegraph/loader/reader/Line.java	94.11% <95.45%> (+28.32%)	11 <6> (+1)	⬆️
...baidu/hugegraph/loader/source/jdbc/JDBCVendor.java	32.87% <0%> (-3.43%)	9% <0%> (-3%)

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