When serving Console HTML index page, we generate the policy that includes allowed (trustworthy) sources.

It may be necessary for some dynamic plugins to add new sources in order to avoid CSP violations at Console runtime.

AC:

• Add new API field to ConsolePlugin CRD for allowing additional CSP sources
• Vendor this change to console-operator and console with appropriate changes, together with unit-tests
• Update README in Console repo to document this API field
• Update README in Enhancement repo to document this API field