Cleanup printcolumns

[amisevsk]

What does this PR do?

Removes .status.ideUrl from the DevWorkspace printcolumns. Since the addition of the Info field (.status.message), the output from kubectl get devworkspaces has become long and unweildy:

$ kubectl get dw

NAME           WORKSPACE ID                PHASE     INFO                                                          URL
theia          workspace8af91dfdf1f1417f   Running                                                                 http://workspace8af91dfdf1f1417f-theia-3100.192.168.49.2.nip.io
web-terminal   workspace32d4b43e65e64e64   Failed    Failed to install network objects required for devworkspace   

Since INFO and URL are generally mutually exclusive, it makes sense to combine the two, so that

• If a workspace has no issues, INFO contains a message like Workspace is accessible at <url>
• If a workspace has an issue, information about the problem is propagated to INFO.

Proposed output (example):

$ kubectl get dw

NAME           WORKSPACE ID                PHASE     INFO
theia          workspace8af91dfdf1f1417f   Running   Workspace is accessible at http://workspace8af91dfdf1f1417f-theia-3100.192.168.49.2.nip.io
web-terminal   workspace32d4b43e65e64e64   Failed    Failed to install network objects required for devworkspace   

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: amisevsk, davidfestal, JPinkney, sleshchenko
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