Application preview URL becomes unavailable

[musienko-maxim]

Description

Preconditions:
*Clone ecllipse-che project and run Openshift cluster locally (go to the just cloned project) and launch command like: [your_path]/che/deploy/openshift/ocp.sh --run-ocp --deploy-che -p=che

Reproduction Steps

• We should create workspace with chectl and dev. file. Download chectl tool binary file with comannd: https://github.com/che-incubator/chectl/releases/latest/download/chectl-linux

• Export 2 variables:
  export CHE_WORKSPACE_JAVA__OPTIONS="-Xmx1500m"
  export CHE_WORKSPACE_MAVEN__OPTIONS="-Xmx1500m"
  I need like workaround for the known bug: Unable to set JAVA_OPTS or MAVEN_OPTS in kubernetes component of devfile #13340

• Save the DevFile (in attachment), and create workspace using command like ./chectl-linux workspace:start --devfile=devfile.yaml

• Consume just created link after creating the wokkspace and launch terminal for the petclinic container. (Terminal -> Open Terminal in specific container -> select petclinic-server).

• Run command in the terminal: java -jar /spring-petclinic-2.1.0.BUILD-SNAPSHOT.jar --spring.profiles.active=mysql. for avoiding problem with the issue: tasks: output of a command is not rendered correctly che-theia#192

• Confirm notification with label A new process is now listening on port 8080 but this port is not exposed in the workspace as a server.
  Would you want to add a redirect for this port so it becomes available ? open link.

• Go to app with link do some changes, for instance add a new owner in the application
  Expected results: The application should works and should be avaliable
  Actual results: We get Application is not available page. See also screencast with steps to reproduce

• Launch command in the terminal for avoiding issue:
  OS and version: Fedora 29, Docker 17, with enabled userland-proxy

Diagnostics:

[sleshchenko]

@benoitf Do you think it's a bug or expected behavior? If it's expected then can we improve UX, like show a pop up that your port is not proxied anymore?

[metlos]

Note that this is also reproducible on minishift.