The CustomResourceDefinition is invalid for 1.17 and 1.18 kubernetes versions

[f41gh7]

There are two problems:

1. with 1.16 and 1.17 clusters

 The CustomResourceDefinition "vmagents.victoriametrics.com" is invalid:
* spec.validation.openAPIV3Schema.properties[spec].properties[containers].items.type: Invalid value: "object": must be a scalar or atomic type as item of a list with x-kubernetes-list-type=set
* spec.validation.openAPIV3Schema.properties[spec].properties[volumeMounts].items.type: Invalid value: "object": must be a scalar or atomic type as item of a list with x-kubernetes-list-type=set
* spec.validation.openAPIV3Schema.properties[spec].properties[remoteWrite].items.type: Invalid value: "object": must be a scalar or atomic type as item of a list with x-kubernetes-list-type=set
* spec.validation.openAPIV3Schema.properties[spec].properties[initContainers].items.type: Invalid value: "object": must be a scalar or atomic type as item of a list with x-kubernetes-list-type=set
* spec.validation.openAPIV3Schema.properties[spec].properties[imagePullSecrets].items.type: Invalid value: "object": must be a scalar or atomic type as item of a list with x-kubernetes-list-type=set

listType=set must be removed to fix it.

2. with 1.18 cluster version

The CustomResourceDefinition "appservices.app.example.com" is invalid: spec.validation.openAPIV3Schema.properties[spec].properties[initContainers].items.properties[ports].items.properties[protocol].default: Required value: this property is in x-kubernetes-list-map-keys, so it must have a default or be a required property

Kubernetes upstream problem.

operator-framework/operator-sdk#3235

need to find out minimal version of Kubernetes, that operator supports.

[f41gh7]

first part fixed.

[f41gh7]

embedded containers and initContainers open api properties were removed.