Caddy2 fix tests

[johnzhanghua]

1. What does this change do, exactly?

This change based on the PR 74 , to fix the broken test cases

2. Please link to the relevant issues.

PR 74 tests failed

3. Which documentation changes (if any) need to be made because of this PR?

4. Checklist

• [ x] I have written tests and verified that they fail without my change
• [ x] I made pull request as minimal and simple as possible. If change is not small or additional dependencies are required, I opened an issue to propose and discuss the design first
• [x ] I have squashed any insignificant commits
• [ x] This change has comments for package types, values, functions, and non-obvious lines of code

[gaby]

@johnzhanghua Thanks for the PR, some of the changes introduced this issue:

[/home/runner/work/forwardproxy/forwardproxy/forwardproxy.go:397] - G104 (CWE-703): Errors unhandled. (Confidence: HIGH, Severity: LOW)
    396: 	}
  > 397: 	r.Body.Close()
    398: 

[johnzhanghua]

@johnzhanghua Thanks for the PR, some of the changes introduced this issue:

[/home/runner/work/forwardproxy/forwardproxy/forwardproxy.go:397] - G104 (CWE-703): Errors unhandled. (Confidence: HIGH, Severity: LOW)
    396: 	}
  > 397: 	r.Body.Close()
    398: 

Sorry, fixed.

[gaby]

@johnzhanghua GoSec issues are gone, some of the tests still fail

[gaby]

@johnzhanghua You can run them locally using go test -v ./... with go 1.21

[johnzhanghua]

@johnzhanghua You can run them locally using go test -v ./... with go 1.21

Added a wait, should be fine now. Tested locally with Docker ubuntu. Could you please trigger the checks ?

[gaby]

@johnzhanghua Awesome, will start reviewing

[gaby]

@johnzhanghua Thank you for the PR, I will keep working on the caddy2 branch