chore: Mount DWO_NAMESPACE into dashboard pod

[tolusha]

What does this PR do?

chore: Mount DWO_NAMESPACE into dashboard pod

Screenshot/screencast of this PR

N/A

What issues does this PR fix or reference?

N/A

How to test this PR?

1. Deploy the operator:

OpenShift

./build/scripts/olm/test-catalog-from-sources.sh

or

build/scripts/docker-run.sh /bin/bash -c "
  oc login \
    --token=<...> \
    --server=<...> \
    --insecure-skip-tls-verify=true && \
  build/scripts/olm/test-catalog-from-sources.sh
"

on Minikube

./build/scripts/minikube-tests/test-operator-from-sources.sh

Common Test Scenarios

• Deploy Eclipse Che
• Start an empty workspace
• Open terminal and build/run an image
• Stop a workspace
• Check operator logs for reconciliation errors or infinite reconciliation loops

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• The repository devfile is up to date and works
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: akurinnoy, rohanKanojia, tolusha

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