Unexport default values (#1055)

* Eliminate hardcoded values + move them at the beginning of file

* Added some comments to defaults

* Update pod.go

* Apply suggestions from code review

Co-authored-by: Darren Lau <panyuenlau@Gmail.com>

* Fix visibility of some consts

* Build fix

* Unexport default values

* Unexport defaults after rebase feature branch

---------

Co-authored-by: Darren Lau <panyuenlau@Gmail.com>

Add ConcurrentBrokerRestartCountPerRack to RollingUpgradeConfig (#1002)

* Add ConcurrentBrokerRestartCountPerRack to RollingUpgradeConfig

add kafkauser annotation validations

Bump up chart versions for dev release (#1012)

Bump up chart versions for dev release (#1012)

feat(Kafka): updated default image (3.1.0->)3.1.2 (#1009)

Updated Kafka broker image version (3.1.0->)3.1.2 (#1005)
release: 0.25.1 (#1010)
#
# Write a message for tag:
#   v0.25.1
# Lines starting with '#' will be kept; you may remove them yourself if you want to.

release: 0.25.1 (#1010)

#
# Write a message for tag:
#   chart/kafka-operator/0.25.1
# Lines starting with '#' will be kept; you may remove them yourself if you want to.

Upgrade default CC and Kafka images in koperator/api (#1007)

api/v0.28.4: #Kafka3.1.2

ID	Author		Title
#1009	@pregnor	Updated default Kafka image (3.1.0->)3.1.2
#
# Write a message for tag:
#   api/v0.28.4
# Lines starting with '#' will be kept; you may remove them yourself if you want to.

Release 0.25.0 preparation (#1008)

* Prepare for release v0.25.0

* Update README to reflect recent zookeeper address changes in config/samples

* Update image tag in helm chart README