Update confluent-platform-secure.yaml to have correct config properties

[Tony Ouyang (TonyOuyangGit)]

The current confluent-platform-secure.yaml have some configs missing when deployed to Kubernetes cluster, this PR adds the missing config and also updates some properties:

1. when tls is set to true, we also need to put tls and authentication properties under metricReporter, otherwise Kafka won't be provisioned
2. based on my understanding, the schema registry should match the replicas that Kafka and broker otherwise NotEnoughReplicasException will be thrown in schema registry pods
3. the correct URL of ksqldb should be ksqldb-tls, otherwise control center will complain the ksqldb host can not be found

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