test: etcd ut

[baerwang]

What this PR does:

Which issue(s) this PR fixes:

Fixes #790

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[cr-gpt[bot]]

Seems you are using me but didn't get OPENAI_API_KEY seted in Variables/Secrets for this repo. you could follow readme for more information

[sonarcloud[bot]]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov-commenter]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (35d9d72) 40.46% compared to head (2c1d331) 40.12%. Report is 2 commits behind head on master.

Files	Patch %	Lines
pkg/config/boot_misc.go	12.50%	7 Missing :warning:
pkg/boot/watcher.go	83.33%	1 Missing :warning:
pkg/runtime/ast/ast.go	0.00%	1 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #815 +/- ## ========================================== - Coverage 40.46% 40.12% -0.35% ========================================== Files 265 265 Lines 26711 26730 +19 ========================================== - Hits 10809 10725 -84 - Misses 14739 14852 +113 + Partials 1163 1153 -10 ```

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