feat: support dify ai-proxy e2e test || feat: support diify ai-proxy e2e test

[VinciWu557]

Ⅰ. Describe what this PR did

新增 dify ai-proxy 插件 e2e 测试

Ⅱ. Does this pull request fix one issue?

fixes #1724

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

由于 plugins/wasm-go/extensions/ai-proxy/provider/dify.go 中的 responseDify2OpenAI 和 streamResponseDify2OpenAI 方法中对于 Created 字段的处理不合理，没有使用 difyResponse 中的 CreatedAt 字段，而是使用当前时间戳，导致测试时无法获取到 llm-mock-server 返回的 mock 值。
因此需要对 plugins/wasm-go/extensions/ai-proxy/provider/dify.go 进行相应改动。

---

Ⅰ. Describe what this PR did

Added the new diify ai-proxy plug-in e2e test

Ⅱ. Does this pull request fix one issue?

fixes #1724

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

V. Special notes for reviews

Because the processing of Created fields in responseDify2OpenAI and streamResponseDify2OpenAI methods in plugins/wasm-go/extensions/ai-proxy/provider/dify.go is not used to use the CreatedAt field in diifyResponse, but the current timestamp is used, resulting in the mock value returned by llm-mock-server during testing.
Therefore, it is necessary to make corresponding changes to plugins/wasm-go/extensions/ai-proxy/provider/dify.go.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.06%. Comparing base (ef31e09) to head (5de5224).
Report is 526 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2319       +/-   ##
===========================================
+ Coverage   35.91%   46.06%   +10.15%     
===========================================
  Files          69       81       +12     
  Lines       11576    13010     +1434     
===========================================
+ Hits         4157     5993     +1836     
+ Misses       7104     6671      -433     
- Partials      315      346       +31     

see 78 files with indirect coverage changes

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[hanxiantao]

@VinciWu557 check-license这一步好像报错了

---

@VinciWu557 Check-license seems to have reported an error

[VinciWu557]

@VinciWu557 check-license这一步好像报错了

@VinciWu557 Check-license seems to have reported an error

很奇怪，我这边应该没有提交 .tgitconfig 这个文件？

Run apache/skywalking-eyes/header@25edfc2fd8d52fb266653fb5f6c42da633d85c07
/usr/bin/docker run --name ba92419c1[7](https://github.com/alibaba/higress/actions/runs/15245241214/job/42870898590#step:5:8)e740fc6431c89e51d1836a5ba59_c787f6 --label 0ba924 --workdir /github/workspace --rm -e "INPUT_LOG" -e "INPUT_CONFIG" -e "INPUT_MODE" -e "INPUT_TOKEN" -e "GITHUB_TOKEN" -e "HOME" -e "GITHUB_JOB" -e "GITHUB_REF" -e "GITHUB_SHA" -e "GITHUB_REPOSITORY" -e "GITHUB_REPOSITORY_OWNER" -e "GITHUB_REPOSITORY_OWNER_ID" -e "GITHUB_RUN_ID" -e "GITHUB_RUN_NUMBER" -e "GITHUB_RETENTION_DAYS" -e "GITHUB_RUN_ATTEMPT" -e "GITHUB_ACTOR_ID" -e "GITHUB_ACTOR" -e "GITHUB_WORKFLOW" -e "GITHUB_HEAD_REF" -e "GITHUB_BASE_REF" -e "GITHUB_EVENT_NAME" -e "GITHUB_SERVER_URL" -e "GITHUB_API_URL" -e "GITHUB_GRAPHQL_URL" -e "GITHUB_REF_NAME" -e "GITHUB_REF_PROTECTED" -e "GITHUB_REF_TYPE" -e "GITHUB_WORKFLOW_REF" -e "GITHUB_WORKFLOW_SHA" -e "GITHUB_REPOSITORY_ID" -e "GITHUB_TRIGGERING_ACTOR" -e "GITHUB_WORKSPACE" -e "GITHUB_ACTION" -e "GITHUB_EVENT_PATH" -e "GITHUB_ACTION_REPOSITORY" -e "GITHUB_ACTION_REF" -e "GITHUB_PATH" -e "GITHUB_ENV" -e "GITHUB_STEP_SUMMARY" -e "GITHUB_STATE" -e "GITHUB_OUTPUT" -e "RUNNER_OS" -e "RUNNER_ARCH" -e "RUNNER_NAME" -e "RUNNER_ENVIRONMENT" -e "RUNNER_TOOL_CACHE" -e "RUNNER_TEMP" -e "RUNNER_WORKSPACE" -e "ACTIONS_RUNTIME_URL" -e "ACTIONS_RUNTIME_TOKEN" -e "ACTIONS_CACHE_URL" -e "ACTIONS_RESULTS_URL" -e GITHUB_ACTIONS=true -e CI=true -v "/var/run/docker.sock":"/var/run/docker.sock" -v "/home/runner/work/_temp/_github_home":"/github/home" -v "/home/runner/work/_temp/_github_workflow":"/github/workflow" -v "/home/runner/work/_temp/_runner_file_commands":"/github/file_commands" -v "/home/runner/work/higress/higress":"/github/workspace" 0ba924:19c17e740fc6431c89e51d1836a5ba59  "-v" "info" "-c" ".licenserc.yaml" "header" "check"
INFO Loading configuration from file: .licenserc.yaml 
INFO Totally checked 1697 files, valid: 461, invalid: 1, ignored: 1235, fixed: 0 
ERROR the following files don't have a valid license header: 
.tgitconfig 
ERROR one or more files does not have a valid license header

[hanxiantao]

@VinciWu557
master 分支已经移除 .tgitconfig 了，我更新了分支现在应该好了

这里包的顺序不对，如果是 goland 需要设置下 import 规范，参考：https://blog.csdn.net/sinat_24092079/article/details/120770592

其他没什么问题了

---

@VinciWu557
The master branch has been removed .tgitconfig and I updated the branch and it should be fine now

The order of packages here is wrong. If it is goland, you need to set the import specification. Refer to: https://blog.csdn.net/sinat_24092079/article/details/120770592

Nothing else is wrong

[hanxiantao]

好像插件的 e2e 测试现在都跳过了，我这边找时间看下了

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It seems that the plug-in's e2e test has been skipped now, so I've looked for time here.

[VinciWu557]

好像插件的 e2e 测试现在都跳过了，我这边找时间看下了

It seems that the plug-in's e2e test has been skipped now, so I've looked for time here.

怀疑是 Github Workflow 有问题？我看其他的 pr 也有这个现象。

https://github.com/alibaba/higress/actions/runs/15129356702/job/42527479914?pr=2269

[hanxiantao]

https://github.com/alibaba/higress/actions/runs/15268013880/job/42937123237?pr=2319 这里有跑对应 e2e 测试的，@cr7258 找时间帮忙 review 下吧

[cr7258]

LGTM 🐉

[CH3CHO]

LGTM