chore!: Upgrade to schemars 1.0, kube 2.0 and k8s-openapi 0.26

[sbernauer]

Description

https://github.com/kube-rs/kube/releases/tag/2.0.0
https://graham.cool/schemars/migrating/

Well, I just noticed CRD generation is now messed up, created kube-rs/kube#1821

k create -f crates/stackable-operator/crds/DummyCluster.yaml                                                                                                                                                                                                                                                                             kind-kind
The CustomResourceDefinition "dummyclusters.dummy.stackable.tech" is invalid: 
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].anyOf[0].description: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].anyOf[0].type: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].anyOf[1].nullable: Forbidden: must be false to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].type: Required value: must not be empty for specified object fields
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].anyOf[0].description: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].anyOf[0].type: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].anyOf[1].nullable: Forbidden: must be false to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].type: Required value: must not be empty for specified object fields
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].anyOf[0].description: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].anyOf[0].type: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].anyOf[1].nullable: Forbidden: must be false to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].type: Required value: must not be empty for specified object fields
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].anyOf[0].description: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].anyOf[0].type: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].anyOf[1].nullable: Forbidden: must be false to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[console].properties[level].type: Required value: must not be empty for specified object fields
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].anyOf[0].description: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].anyOf[0].type: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].anyOf[1].nullable: Forbidden: must be false to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[file].properties[level].type: Required value: must not be empty for specified object fields
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].anyOf[0].description: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].anyOf[0].type: Forbidden: must be empty to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].anyOf[1].nullable: Forbidden: must be false to be structural
* spec.validation.openAPIV3Schema.properties[spec].properties[nodes].properties[roleGroups].additionalProperties.properties[config].properties[logging].properties[containers].additionalProperties.properties[loggers].additionalProperties.properties[level].type: Required value: must not be empty for specified object fields

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

Author

• Changes are OpenShift compatible
• CRD changes approved
• CRD documentation for all fields, following the style guide.
• Integration tests passed (for non trivial changes)
• Changes need to be "offline" compatible

Reviewer

• Code contains useful comments
• Code contains useful logging statements
• (Integration-)Test cases added
• Documentation added or updated. Follows the style guide.
• Changelog updated
• Cargo.toml only contains references to git tags (not specific commits or branches)

Acceptance

• Feature Tracker has been updated
• Proper release label has been added