Using chectl with helm 3

[kameshsampath]

When I try to use chectl with helm 3 , it fails with an error

I understood from @l0rd that Helm 3 does not use tiller

Che version

• 7.4.0

Steps to reproduce

1. Install latest helm from https://helm.sh/
2. Install latest chectl (chectl/7.3.2 linux-x64 node-v10.17.0)
3. Run chectl server:start --cheimage=eclipse/che-server:7.4.0 --platform=minikube

Expected behavior

Che server should start successfully, but fails with error

chectl server:start --cheimage=eclipse/che-server:7.4.0 --platform=minikube  ✔ Verify Kubernetes API...OK
  ✔ 👀  Looking for an already existing Che instance
    ✔ Verify if Che is deployed into namespace "che"...it is not
  ✔ ✈️  Minikube preflight checklist
    ✔ Verify if kubectl is installed
    ✔ Verify if minikube is installed
    ✔ Verify if minikube is running
    ↓ Start minikube [skipped]
      → Minikube is already running.
    ✔ Verify if minikube ingress addon is enabled
    ↓ Enable minikube ingress addon [skipped]
      → Ingress addon is already enabled.
    ✔ Retrieving minikube IP and domain for ingress URLs...192.168.39.39.nip.io.
  ❯ 🏃‍  Running Helm to install Che
    ✔ Verify if helm is installed
    ✔ Create Tiller Role Binding...it already exists.
    ✔ Create Tiller Service Account...it already exists.
    ✔ Create Tiller RBAC
    ✖ Create Tiller Service
      → error: E_COMMAND_FAILED
      Preparing Che Helm Chart
      Updating Helm Chart dependencies
      Deploying Che Helm Chart
Error: Command "helm init --service-account tiller --wait" failed with return code 1
stderr: Error: unknown flag: --service-account
stdout:
error: E_COMMAND_FAILED
    at HelmTasks.<anonymous> (/usr/local/lib/chectl/lib/tasks/installers/helm.js:213:23)
    at Generator.next (<anonymous>)
    at fulfilled (/usr/local/lib/chectl/node_modules/tslib/tslib.js:107:62)

Runtime

• kubernetes

Client Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0+724e12f93f", GitCommit:"420c3d6212a959907360fb0b6545f2f0ab173271", GitTreeState:"clean", BuildDate:"2019-10-22T23:36:44Z", GoVersion:"go1.12.8", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0", GitCommit:"641856db18352033a0d96dbc99153fa3b27298e5", GitTreeState:"clean", BuildDate:"2019-03-25T15:45:25Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"linux/amd64"}

• minikube

commit: 792dbf92a1de583fcee76f8791cff12e0c9440ad-dirty

Installation method

• chectl chectl server:start --cheimage=eclipse/che-server:7.4.0 --platform=minikube

Environment

• my computer
  • Windows
  • Linux
  • macOS

CC: @l0rd