fix some issue about upgrade

[ldpliu]

Summary

1. Agent should start after transport ready
2. Add an annotation in kafka cr in upgrade case. then identify the isNewKafkaCluster based on this annotation. With this, operator restart will not impact this field.

Related issue(s)

Fixes #
https://issues.redhat.com/browse/ACM-16797

Tests

• Unit/function tests have been added and incorporated into make unit-tests.
• Integration tests have been added and incorporated into make integration-test.
• E2E tests have been added and incorporated into make e2e-test-all.
• List other manual tests you have done.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ldpliu
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[ldpliu]

/cc @clyang82

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
80.0% Coverage on New Code
0.0% Duplication on New Code

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