Move ensure to first parameter of resource
Move ensure to first parameter of resource

The lint tests failed because the `ensure` parameter was not the first
resource:

`WARNING: ensure found on line but it's not the first attribute on line 40`

Move it to the top to make lint happy.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet