Putting global configuration inside the configuration of a campaign does not seem right to me.
As we are refactoring attester, I think we should keep things well organized (or organize them better) and separate global configuration from campaign-specific configuration.

The configuration could be a structure such as:
```js
{
  // array of campaigns to be executed (we could start by only supporting one):
  'campaigns': [{
    'resources': {},
    'tests': {},
    'coverage': {},
    'test-reports': {},
    'coverage-reports': {}
    'browsers': {}
  }],
  // other global parameters
  'port': 7777
  // ...
}
```