[DDF] A new field workspaceNamespaceDefault is now required so this no longer works for a minimal install of CRW.

A new field workspaceNamespaceDefault is now required so this no longer works for a minimal install of CRW.

Reported by: gnunn

https://access.redhat.com/documentation/en-us/red_hat_codeready_workspaces/2.10/html-single/installation_guide/index#annotations:6f1d3fe5-d606-477d-8591-9a671425368c

Scoping:

Review the content of " A minimal CheCluster Custom Resource example." in
https://github.com/eclipse-che/che-docs/blob/master/modules/installation-guide/examples/checluster-custom-resource.yaml