Refactor test dir

[chuntaojun]

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[polaris-test-bot]

2023-03-14 00:45:02: =========TEST START==========
2023-03-14 00:45:29: Pre-Merge check success! Now we will perform a full automated test which is expected to take 2 hours, thank you for your patience.
2023-03-14 00:46:33: =========TEST START==========
2023-03-14 00:47:00: Pre-Merge check success! Now we will perform a full automated test which is expected to take 2 hours, thank you for your patience.
2023-03-14 00:58:20: =========TEST START==========
2023-03-14 00:58:51: Pre-Merge check success! Now we will perform a full automated test which is expected to take 2 hours, thank you for your patience.
2023-03-14 01:17:28: [STANDALONE VERSION]PR autotest PASSED! We executed 20 test cases and 20 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/pr1273621756/sta/qta-report.html
2023-03-14 01:17:32: [CLUSTER VERSION] PR autotest PASSED! We executed 20 test cases and 20 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/pr1273621756/clu/qta-report.html
2023-03-14 01:17:36: [KUBENETES VERSION]PR autotest FAILED! We executed 20 test cases and 19 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/pr1273621756/k8s/qta-report.html

[codecov]

Codecov Report

Merging #995 (78bcce7) into main (aa11ac2) will decrease coverage by 0.45%.
The diff coverage is 24.46%.

❗ Current head 78bcce7 differs from pull request most recent head a117039. Consider uploading reports for the commit a117039 to get more accurate results

@@            Coverage Diff             @@
##             main     #995      +/-   ##
==========================================
- Coverage   57.66%   57.21%   -0.45%     
==========================================
  Files         191      190       -1     
  Lines       35678    34387    -1291     
==========================================
- Hits        20573    19675     -898     
+ Misses      12404    12144     -260     
+ Partials     2701     2568     -133     

Impacted Files	Coverage Δ
cache/instance_metrics.go	4.51% <0.00%> (-3.94%)	⬇️
cache/config_file_metrics.go	25.68% <20.37%> (-5.23%)	⬇️
service/routing_config_v2.go	53.58% <100.00%> (ø)
service/test_export.go	100.00% <100.00%> (ø)

... and 6 files with indirect coverage changes

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