🐛 Only decorate namespace for namespaced resources

[zhujian7]

Summary

Only decorate namespace for namespaced resources for template addons, otherwise if we set the namespace for cluster-scoped resources, and we want to use the annotation addon.open-cluster-management.io/deletion-orphan to orphan the resource when deleting the addon, the deleteOption will look like:

  deleteOption:
    propagationPolicy: SelectivelyOrphan
    selectivelyOrphans:
      orphaningRules:
      - group: ""
        name: open-cluster-management-agent-addon
        namespace: open-cluster-management-agent-addon # added ns value
        resource: namespaces

the extra namespace filed will result in the resource being deleted

Related issue(s)

Fixes #

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.64%. Comparing base (5313ff7) to head (41cc2c2).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #462      +/-   ##
==========================================
- Coverage   62.64%   62.64%   -0.01%     
==========================================
  Files         136      136              
  Lines       11528    11529       +1     
==========================================
  Hits         7222     7222              
  Misses       3539     3539              
- Partials      767      768       +1     

Flag	Coverage Δ
unit	62.64% <100.00%> (-0.01%)	⬇️

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[zhujian7]

/cc @qiujian16

[qiujian16]

/approve
/lgtm

[openshift-ci]

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