[improve] Improve Httpclient Connection

[JNSimba]

Proposed changes

Issue Number: close #xxx

Problem Summary:

Connector uses HttpClient to send requests
When the FIN packet sent by the server is lost, subsequent HttpClient requests will reuse the last link, causing the request to report a Connection Reset error.
So here are two optimizations:

1. For stream mode, add evictIdleConnections setting, which will regularly clean up expired connection.
2. For batch mode, do not reuse the httpclient connection

Checklist(Required)

1. Does it affect the original behavior: (Yes/No/I Don't know)
2. Has unit tests been added: (Yes/No/No Need)
3. Has document been added or modified: (Yes/No/No Need)
4. Does it need to update dependencies: (Yes/No)
5. Are there any changes that cannot be rolled back: (Yes/No)

Further comments

If this is a relatively large or complex change, kick off the discussion at [email protected] by explaining why you chose the solution you did and what alternatives you considered, etc...