support kubeconfig saving type

[stoneshi-yunify]

What type of PR is this?

What this PR does / why we need it:

the kubeconfigContent credential is deprecated because the provider https://github.com/jenkinsci/kubernetes-cd-plugin has been suspended, should use secret-text to store kubeconfig in the future.

Which issue(s) this PR fixes:

Fixes https://github.com/kubesphere/project/issues/6185

Special notes for reviewers:

Please check the following list before waiting reviewers:

• Already committed the CRD files to the Helm Chart if you created some new CRDs
• Already added the permission for the new API
• Already added the RBAC markers for the new controllers

Does this PR introduce a user-facing change??

support multiple kubeconfig saving types

[ks-ci-bot]

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[stoneshi-yunify]

cc @renyunkang