fix(ruby): Fix ruby plugin setting default settings to be used

[sunix]

Signed-off-by: Sun Seng David TAN sutan@redhat.com

What does this PR do?

Fixing settings needed for ruby plugin to work.
Using hack as mentioned in eclipse-che/che#17975 (comment)

Settings needed: eclipse-che/che#18871 (comment)

Screenshot/screencast of this PR

What issues does this PR fix or reference?

Fix eclipse-che/che#18871

How to test this PR?

1. Start this devfile:

apiVersion: 1.0.0
metadata:
  generateName: ruby-test-fix-settings-
projects:
  - name: rails-mister-cocktail
    source:
      type: github
      location: https://github.com/omontigny/rails-mister-cocktail
components:
  - id: castwide/solargraph/latest
    type: chePlugin
    registryUrl: 'https://sunix-che-plugin-registry-fix-ruby-yjb3d.surge.sh/v3'

2. edit any .rb file
3. see code completion is working

the provided registry refers to this manually built image which contains the changes: https://quay.io/repository/sunix/che-plugin-sidecar/manifest/sha256:bf376396c578cbd30877172abf3cc02dfeea58afa1403d44f4c2d2c7aeefd3d3

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
• 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.