fix:empty attribute

[nallikaea]

What does this PR do?

16:23:21  URL: https://reportportal-crw.apps.ocp-c1.prod.psi.redhat.com/api/v1/devspaces/launch
16:23:21  method: POST
16:23:21      at /tmp/e2e/node_modules/@reportportal/client-javascript/lib/rest.js:41:15
16:23:21      at processTicksAndRejections (node:internal/process/task_queues:96:5)
16:23:21  Failed to send log. Error: Request failed with status code 400: {"errorCode":4001,"message":"Incorrect Request. [Field 'attributes[].value' should have size from '1' to '128'.] [Field 'attributes[].value' should not contain only white spaces and shouldn't be empty.] "}

Set default value not empty string.

Screenshot/screencast of this PR

NA

What issues does this PR fix or reference?

NA

How to test this PR?

NA

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 or new feature
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• 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.

[dmytro-ndp]

LGTM

[nallikaea]

pushed into #22634