Helm installer is broken

[mmorhun]

Describe the bug

When try to install Eclipse Che using chectl and helm installer it fails.

Che version

nightly

Steps to reproduce

Run:

chectl server:start --platform=minikube --installer=helm

Expected behavior

Helm installer installs Che

Runtime

kubernetes

Installation method

chectl

Environment

minikuibe

Eclipse Che Logs

Erorr log of Che server:

com.google.inject.CreationException: Unable to create injector, see the following errors:

1) Error injecting constructor, org.eclipse.che.api.workspace.server.spi.InfrastructureException: Neither KUBERNETES_NAMESPACE nor POD_NAMESPACE is defined. Unable to determine Che installation location
  at org.eclipse.che.workspace.infrastructure.kubernetes.namespace.CheNamespace.<init>(CheNamespace.java:54)
  at org.eclipse.che.workspace.infrastructure.kubernetes.namespace.CheNamespace.class(CheNamespace.java:54)
  while locating org.eclipse.che.workspace.infrastructure.kubernetes.namespace.CheNamespace

Additional context

Operator installation works as expected

[sparkoo]

@mmorhun to give you some context, I've intentionally introduced this into che-server with #17557 (https://github.com/eclipse/che/pull/17557/files#diff-8855fac8bb68d106dd25037d440a3e22R43). It previously just silently returned null, which was imho silent ticking bomb. I didn't know that it's not set in helm. Sorry for that, I should have tested it and communicate it sooner with you.

[mmorhun]

Fixed