Remove temporary code and return an error instead of trying to send unauthenticated requests

[eamansour]

For galasa-dev/projectmanagement#1473 and galasa-dev/projectmanagement#1820

Changes:

• Now that authentication is mandatory, this PR removes the temporary code that was previously used to fall back to sending unauthenticated requests to the API server if a user could not authenticate with the ecosystem.
  • Instead, an error will be returned informing the user that they will need to authenticate with the ecosystem.
• Changed the requestor value used in the ecosystem tests to use my ID temporarily to get the main builds passing again
• Fixed an issue where the "Authorization" header was not being set when running galasactl resources commands, causing 401 errors when contacting an API server requiring authentication

[galasa-team]

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[galasa-team]

Build successful