0.12.0-rc2

Changes since 0.12.0-rc1

• Throw error when a TLS KafkaUser with name >64 chars is created (#1698)
• Workaround the versioning issues in CRDs with KafkaStatus after version upgrade (#1695)
• Fix problems with certificate renewals caused by an incorrect commit (#1688)
• Update RBAC resources from v1beta1 to v1

Upgrading from Strimzi 0.11.x

See the documentation - chapter 8. Strimzi and Kafka upgrades. Also notice the section 9. Strimzi resource upgrades about upgrading the resources from v1alpha1 to v1beta1.