[improve][pip] PIP-347: add role field in consumer's stat

[thetumbled]

Motivation

By setting config allowAutoSubscriptionCreation=true, we allow user to create subscriptions automatically if user have the consume permission. We have a strong need to trace back the owner of a specific subscription, but currently there is no such way to achieve that.

Modifications

Add field role in the stats response.

Verifying this change

• [x] Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change added tests and can be verified as follows:

(example:)

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

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• [ ] Dependencies (add or upgrade a dependency)
• [ ] The public API
• [ ] The schema
• [ ] The default values of configurations
• [ ] The threading model
• [ ] The binary protocol
• [ ] The REST endpoints
• [ ] The admin CLI options
• [ ] The metrics
• [ ] Anything that affects deployment

Documentation

• [ ] doc
• [x] doc-required
• [ ] doc-not-needed
• [ ] doc-complete

Matching PR in forked repository

PR in forked repository: https://github.com/thetumbled/pulsar/pull/48

[thetumbled]

PTAL, thanks. @lhotari @codelipenghui @BewareMyPower @Technoboy- @dao-jun @poorbarcode

[dao-jun]

@thetumbled Please resolve conflicts

[thetumbled]

@thetumbled Please resolve conflicts

Done, thank you.

[thetumbled]

Could you help to review? thank you. @lhotari @Technoboy- @codelipenghui

[thetumbled]

/pulsarbot rerun-failure-checks

[thetumbled]

/pulsarbot rerun-failure-checks