Support init jwt secret when create pulsar cluster

[tuteng]

(If this PR fixes a github issue, please add Fixes #<xyz>.)

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Motivation

Explain here the context, and why you're making that change. What is the problem you're trying to solve.

Modifications

• In order to reuse toolset image and to make it easier to manage, we put this tool under toolset, which will share most of toolset's functionality(image, securityContext, label etc.)
• No extra configuration is introduced, when jwt auth is enabled, it will execute the job if initialize is configured.
• Multiple executions will not overwrite an existing secret

One example:

helm install {your-release-name} ./ -f ./values.yaml --set initialize=true --set namespace={your-namespace} --set components.vault=false --set components.streamnative_console=false --set monitoring.node_exporter=false --set auth.vault.enabled=false --set auth.authentication.jwt.enabled=true -n {your-namespace} --debug

Verifying this change

• Make sure that the change passes the CI checks.

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This change is a trivial rework / code cleanup without any test coverage.

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This change is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Documentation

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[github-actions]

@tuteng:Thanks for your contribution. For this PR, do we need to update docs?
(The PR template contains info about doc, which helps others know more about the changes. Can you provide doc-related info in this and future PR descriptions? Thanks)

[github-actions]

@tuteng:Thanks for providing doc info!