Kafka Operator 0.7.0

This release includes several enhancements and bug fixes:

0.6.1...0.7.0

Enhancements:

• bump cert-manager version to 0.10.1 in readme
• kafkatopic cr status improvements
• allow for variable PKI backends (defaults to cert-manager)
• add support for vault PKI backend
• move CC topic to kafkatopic CR
• replace pem-to-jks init containers with prepared secrets
• add support for Kafka version 2.2.0+
• add the ability to set annotations on the broker pods
• add unit test for Kafka Topic and User controller

Bug fixes:

• fix cruise control topic creation bug, when the internal external listeners type differs

Thanks for the contributors special kudos to @tinyzimmer. 🍺