[INLONG-4203][Manager] Improve HTTP request and response parse in manager client

[leosanqing]

Title Name: [INLONG-4203][Manager] Improve http request and response parse in manager client

Fixes #4203

Motivation

• The stream of the HTTP request is not closed, which may cause a leak

• When creating an OkHttp request, there is redundant code. After the get() param, post() is used, and it can also be simplified.

• When parsing the response, the processing is a bit cumbersome, and the generic type is not used

Modifications

• Use try-with-resources to prevent unclosed streams

• Provide a new JSON parsing method to easily parse the response of HTTP requests

• Correct some wrong usage of creating OkHttp Request object

Verifying this change

• This change is a trivial rework/code cleanup without any test coverage.

Documentation

• Does this pull request introduces a new feature? (no)

[healchow]

@shink The InLong Greeting / Greet process was failed, PTAL.

[healchow]

@kipshi This PR involves the manager client, PTAL.

[shink]

@healchow Please check out actions/first-interaction#31 (comment). We need pull_request_target for it to work.

[shink]

@healchow Fixed in #4206, please review.
@leosanqing Thank you for your contribution. Please rebase your commits after #4206 be merged.

[healchow]

#4206 was merged. @leosanqing Please rebase the master branch into your PR, thanks.

[healchow]

I found that the rebase occurred with some unexpected changes, please reset from the master branch, and commit again. Thanks a lot.

[healchow]

LGTM