[chectl] server:start failed with helm installer on minikube

[dmytro-ndp]

Describe the bug

chectl server:start failed on minikube:
https://codeready-workspaces-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/che-pr-tests/view/K8S/job/Che-Theia-PR-check-E2E-Happy-path-tests-against-K8S__reserved/883/console

+ /usr/local/bin/chectl server:start --k8spodreadytimeout=180000 --platform=minikube --listr-renderer=verbose --skip-version-check
[05:25:29] Verify Kubernetes API [started]
[05:25:29] Verify Kubernetes API...OK [title changed]
[05:25:29] Verify Kubernetes API...OK [completed]
[05:25:29] 👀  Looking for an already existing Eclipse Che instance [started]
[05:25:29] Verify if Eclipse Che is deployed into namespace "che" [started]
[05:25:29] Verify if Eclipse Che is deployed into namespace "che"...it is not [title changed]
[05:25:29] Verify if Eclipse Che is deployed into namespace "che"...it is not [completed]
[05:25:29] 👀  Looking for an already existing Eclipse Che instance [completed]
[05:25:29] ✈️  Minikube preflight checklist [started]
...
[05:25:30] 🏃‍  Running Helm to install Eclipse Che [failed]
[05:25:30] → Command failed with exit code 1: kubectl apply -f /usr/local/lib/chectl/installers/cert-manager.yml
error: error validating "/usr/local/lib/chectl/installers/cert-manager.yml": error validating data: ValidationError(CustomResourceDefinition.spec): unknown field "preserveUnknownFields" in io.k8s.apiextensions-apiserver.pkg.apis.apiextensions.v1beta1.CustomResourceDefinitionSpec; if you choose to ignore these errors, turn validation off with --validate=false
 ›   Error: Error: Command failed with exit code 1: kubectl apply -f 
 ›   /usr/local/lib/chectl/installers/cert-manager.yml
 ›   error: error validating 
 ›   "/usr/local/lib/chectl/installers/cert-manager.yml": error validating 
 ›   data: ValidationError(CustomResourceDefinition.spec): unknown field 
 ›   "preserveUnknownFields" in 
 ›   io.k8s.apiextensions-apiserver.pkg.apis.apiextensions.v1beta1.CustomResour
 ›   ceDefinitionSpec; if you choose to ignore these errors, turn validation 
 ›   off with --validate=false
 ›   Installation failed, check logs in '/tmp/chectl-logs/1582799129358'

Che version

• latest
• nightly
• other: please specify

Steps to reproduce

1. install minikube of 1.1.1 version
2. download chectl from here
3. execute the command:
   chectl server:start --k8spodreadytimeout=180000 --platform=minikube --listr-renderer=verbose --skip-version-check

Expected behavior

Single User Eclipse Che is installed by Help on minikube

Runtime

• kubernetes (include output of kubectl version)
• Openshift (include output of oc version)
• minikube:1.1.1

Client Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.1", GitCommit:"d224476cd0730baca2b6e357d144171ed74192d6", GitTreeState:"clean", BuildDate:"2020-01-14T21:04:32Z", GoVersion:"go1.13.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.3", GitCommit:"5e53fd6bc17c0dec8434817e69b04a25d8ae0ff0", GitTreeState:"clean", BuildDate:"2019-06-06T01:36:19Z", GoVersion:"go1.12.5", Compiler:"gc", Platform:"linux/amd64"}

Screenshots

Installation method

• chectl https://github.com/che-incubator/chectl/releases/tag/20200226154025
• che-operator
• minishift-addon
• I don't know

Environment

• my computer
  • Windows
  • Linux
  • macOS
• Cloud
  • Amazon
  • Azure
  • GCE
  • other (please specify)
• other: CRW CCI

Eclipse Che Logs

Additional context

[dmytro-ndp]

It has been fixed by commit che-incubator/chectl@035a924