fix(helm): Remove deprecated/separate validation endpoint

[KilianHaag]

WHAT

The validation endpoint is not separate anymore and instead part of the /control endpoint.
This PR removes all references to a separate /validation endpoint and instead uses the /control endpoint.
Also updates any references to the validation port in the docs.

WHY

The memory chart currently doesn't work, as the WEB_HTTP_VALIDATION_PORT is not functional and returns a 404.

FURTHER NOTES

There is a clunky workaround, by setting additional environment variables and changing the validation endpoint path and port:

  runtime:
    endpoints:
      validation:
        path: /foobar
        port: 8092
    env:
      WEB_HTTP_VALIDATION_PATH: '/foobar'
      WEB_HTTP_VALIDATION_PORT: '8091'
      EDC_DATAPLANE_TOKEN_VALIDATION_ENDPOINT: http://***-runtime:8083/control/token

But this causes issues, when deployed via argoCD, as the duplicate Env vars cause proplems during the diff phase.

Closes #909

[github-actions]

This pull request is stale because it has been open for 7 days with no activity.

[github-actions]

This pull request was closed because it has been inactive for 7 days since being marked as stale.

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[paullatzelsperger]

LGTM

[ndr-brt]

🚀