[Enhancement] Optimize some configuration information of HTTP Sink Connector

[cnzakii]

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• I had searched in the issues and found no similar issues.

Enhancement Request

Optimize some configuration information of HTTP Sink Connector

Describe the solution you'd like

1. Remove the ssl field from the config file, this field is not valid
   
2. Change the default value of maxRetries to 2 (first attempts are not counted), 3 attempts is the common practice.
   

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct *

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