[componenttest] Move CheckConfigStruct to confmaptest

[evan-bradley]

Description

This function is mostly concerned with config unmarshaling, so it relates much more to confmap than it does to component.

[codecov]

Codecov Report

Attention: Patch coverage is 87.01299% with 10 lines in your changes missing coverage. Please review.

Project coverage is 92.16%. Comparing base (8cf42f3) to head (75132f3).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
confmap/confmaptest/configtest.go	87.01%	8 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (87.01%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12580      +/-   ##
==========================================
- Coverage   92.18%   92.16%   -0.02%     
==========================================
  Files         469      469              
  Lines       25390    25471      +81     
==========================================
+ Hits        23405    23476      +71     
- Misses       1574     1582       +8     
- Partials      411      413       +2     

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[evan-bradley]

Contrib tests are broken due to the changes in mdatagen; will need a make update-otel after this is merged. I'm skipping the contrib tests for now.

[mx-psi]

One small hiccup with this: we split all the test modules except for confmaptest, so this will be moved from a 0.x module to a 1.x module. That's okay for me but wanted to highlight it

[bogdandrutu]

Suggested change

	// Deprecated: [v0.122.0] Use confmaptest.CheckConfigStruct instead.
	func CheckConfigStruct(config any) error {
	// Deprecated: [v0.122.0] Use confmaptest.CheckConfigStruct instead.
	var CheckConfigStruct = confmaptest.CheckConfigStruct

[evan-bradley]

That's a good idea, I'll do that.

[evan-bradley]

One small hiccup with this: we split all the test modules except for confmaptest, so this will be moved from a 0.x module to a 1.x module.

I missed that, thanks for pointing it out. I know I want to make at least one change to this function, I'm going to make this a bit more airtight before I move it.

[evan-bradley]

@mx-psi @bogdandrutu Please see #12590. From what I can tell, we can get away without any breaking changes, but I want to confirm we're okay with how that works before we move forward.