ES创建连接时使用“是否验证服务端ssl证书”字段

[feiazifeiazi]

1. ES创建连接时使用“是否验证服务端ssl证书”字段.
2. is_ssl字段，改为从instance对象获取。（目前只有redis和es使用）

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.25%. Comparing base (0e649e9) to head (913d380).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2815      +/-   ##
==========================================
- Coverage   78.25%   78.25%   -0.01%     
==========================================
  Files         124      124              
  Lines       17493    17492       -1     
==========================================
- Hits        13690    13689       -1     
  Misses       3803     3803              

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