E2E Happy path tests failed on build of test project step

[dmytro-ndp]

Describe the bug

E2E Happy path tests failed because test project didn't build successfully:
https://codeready-workspaces-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/che-pr-tests/view/K8S/job/Single-Che-PR-check-E2E-Happy-path-tests-against-k8s-on-codenvy-slave9/1226/console

  Validation of workspace build and run
        ▼ TopMenu.selectOption "Terminal"
        ▼ TopMenu.clickOnTopMenuButton "Terminal"
        ▼ Ide.closeAllNotifications
        ▼ TopMenu.clickOnSubmenuItem "Run Task..."
        ▼ QuickOpenContainer.waitContainer
        ▼ QuickOpenContainer.clickOnContainerItem "build-file-output"
        ▼ QuickOpenContainer.waitContainer
        ▼ QuickOpenContainer.waitContainerDisappearance
        ▼ QuickOpenContainer.clickOnContainerItem "Continue without scanning the task output"
        ▼ QuickOpenContainer.waitContainer
        ▼ QuickOpenContainer.waitContainerDisappearance
        ▼ ProjectTree.expandPathAndOpenFile "petclinic"
        ▼ ProjectTree.expandItem "petclinic"
        ▼ ProjectTree.waitItemExpanded "petclinic"
        ▼ ProjectTree.clickOnItem "petclinic/result-build-output.txt"
    1) Build application

  8 passing (6m)
  1 pending
  1 failing

  1) Validation of workspace build and run
       Build application:
     TimeoutError: Waiting for element to be located By(css selector, div[id='/projects:/projects/petclinic/result-build-output.txt'])
Wait timed out after 220006ms

Che version

• latest
• nightly
• other: please specify

Steps to reproduce

• start Che on kubernetes using eclipse/che-server:nighty
• create workspace using Happy path tests DevFile.
• build test project

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:

Screencast

https://youtu.be/c8xhi_-zFHg

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: codenvy-slave9
  It wasn't reproduced on CRW upshift slaves

Additional context

[dmytro-ndp]

The issue wasn't reproduced locally.