Release 0.12.2-adobe-20200708

Rebased on top of banzaicloud@be223cb

Internal changes (not upstream)

• Remove Prometheus scraping hardcoded annotations (#10)
• Add support for dedicated envoy deployment per brokerConfigGroup (#2)

Upstream changes since last release:

• Update objectmatcher to version 1.4.0 and cert manager in the sdk to 1.15.1
• Remove finalizer when CR is in delete state without certificates
• Fix comment on truststore
• Update vault backend to populate truststore as well
• Add support for cert manager generated jks
• Update cruise control to version 2.5.0
• Update go version to 1.14
• Add DESCRIBE_CONFIG to the common ACLs
• Upgrade jmx version to 0.13.0
• Fix kafkaCluster upscale cannot be cancelled or updated
• Add missing rbac rules which occured since the makefile error
• Fix rbac generation in case of make manifests run
• Removed serviceaccount references
• Switch to not managing the service account at all
• Do not create service account if default
• Helm chart: Make CRDs installation helm2 and helm3 compatible
• Helm chart: Make operator ServiceAccount configurable