Fix: address failure when rendering addon API schemas

[charlie0129]

Signed-off-by: Charlie Chiang charlie_c_0129@outlook.com

Description of your changes

After the introduction of global addon parameters, rendering APISchemas will fail:

$ vela addon enable sample-addon
enable addon by local dir: sample-addon 
Error: fail to generate openAPIschema for addon sample-addon : capability sample-addon doesn't contain section `parameter`

This is because it is still reading the legacy paramter.cue. But we are using global parameters, so there is nothing inside the legacy parameter.

Now it will read the global parameter first.

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Tests for the new addon structure have been added to prevent regressions.

Special notes for your reviewer

Core changes are in pkg/addon/addon.go

[codecov]

Codecov Report

Merging #4433 (0442f82) into master (3e57246) will increase coverage by 2.02%.
The diff coverage is 60.00%.

@@            Coverage Diff             @@
##           master    #4433      +/-   ##
==========================================
+ Coverage   59.47%   61.49%   +2.02%     
==========================================
  Files         343      348       +5     
  Lines       34247    34389     +142     
==========================================
+ Hits        20368    21149     +781     
+ Misses      11199    10502     -697     
- Partials     2680     2738      +58     

Flag	Coverage Δ
apiserver-e2etests	27.78% <0.00%> (+0.09%)	⬆️
apiserver-unittests	39.97% <ø> (+0.05%)	⬆️
core-unittests	56.55% <60.00%> (+0.09%)	⬆️
e2e-multicluster-test	19.80% <0.00%> (?)
e2e-rollout-tests	22.87% <ø> (-0.02%)	⬇️
e2etests	29.01% <ø> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/addon/addon.go	64.36% <50.00%> (+1.01%)	⬆️
pkg/addon/render.go	76.33% <100.00%> (ø)
...tepdefinition/workflowstepdefinition_controller.go	69.14% <0.00%> (-7.45%)	⬇️
...es/policydefinition/policydefinition_controller.go	69.47% <0.00%> (-2.11%)	⬇️
...server/infrastructure/datastore/kubeapi/kubeapi.go	66.53% <0.00%> (-0.39%)	⬇️
pkg/apiserver/domain/service/addon.go	60.14% <0.00%> (ø)
pkg/cmd/builder.go	78.72% <0.00%> (ø)
pkg/cmd/completion.go	0.00% <0.00%> (ø)
pkg/cmd/utils.go	26.92% <0.00%> (ø)
pkg/cmd/factory.go	78.78% <0.00%> (ø)
... and 53 more

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[wangyikewxgm]

LGTM

[github-actions]

Successfully created backport PR #4445 for release-1.5.