Bump httpclient to 4.5.13 and fix start with 'jdbc:' problem

[coderzc]

No description provided.

[codecov]

Codecov Report

Merging #235 (566b456) into master (21e0c8f) will decrease coverage by 0.02%.
The diff coverage is 75.00%.

@@             Coverage Diff              @@
##             master     #235      +/-   ##
============================================
- Coverage     73.56%   73.54%   -0.03%     
  Complexity      876      876              
============================================
  Files            81       81              
  Lines          3685     3689       +4     
  Branches        439      439              
============================================
+ Hits           2711     2713       +2     
- Misses          775      777       +2     
  Partials        199      199              

Impacted Files	Coverage Δ
...baidu/hugegraph/loader/source/jdbc/JDBCVendor.java	33.33% <75.00%> (+0.45%)	⬆️

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