add feature, if set minIdle, then program will hold minIdle connectio…

…ns at least

fixed redis lock bug

fixed redis lock bug

[ci skip]

fixed redis lock bug

[ci skip]

optimize socket

[ci skip]

optimize socket

[ci skip]

optimize socket

[ci skip]

Merge pull request #1 from piaohao/dev

1.add more args of poolconfig; 2.improve test cases

1.fixed some send command bug;

2.fixed convert util bug;
3.complete cluster,pipeline test case;

optimize test case