Plugin installation fails from che-theila plugin view on Openshift 4 with enabled OAuth

Describe the bug

Plugin installation fails che-theila plugin view with Openshift 4 with enabled OAuth:

Che version

• latest
• nightly
• other: please specify

Steps to reproduce

1. Start Che Server on Openshift 4 with enabled OAuth
2. Start a workspace
3. Open plugin view and install any plugin
4. ERROR: Workspace fails to restart / workspace deployment are not cleared

Expected behavior

Plugin installations works as expected (workspace is restarted with a newly installed plugin availbale)

Runtime

• kubernetes (include output of kubectl version)
• Openshift (include output of oc version)
• minikube (include output of minikube version and kubectl version)
• minishift (include output of minishift version and oc version)
• docker-desktop + K8S (include output of docker version and kubectl version)
• other: (please specify)

Screenshots

Installation method

• chectl
• che-operator
• minishift-addon
• I don’t know

Environment

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

Additional context

[skabashnyuk]

@rhopp @dmytro-ndp could you please verify (this affects CRW 2.0)

With(preferred) and without OAuth enabled, please.

[vitaliy-guliy]

At the moment we ask the dashboard to restart the workpsace, which is working fine. There are two PRs to che 7.3.x and che-theia 7.3.2 solving the problem. https://github.com/eclipse/che/pull/15194 https://github.com/eclipse/che-theia/pull/542