nginx::resource::upstream with no members can only be called once #897
Description
We define upstreams with no members because we use a custom in-house module to resolve the destination. This use to work fine with an older version of the module. But the latest version assumes that if nginx::resource::upstream has no members defined then you want to collect them. That's all well and good but the collection logic is flawed, the collection is done through a class (class { '::nginx::resource::upstream::collect': ) and classes can only be called once. This effectively means you can only have one upstream defined that uses 'collected' members. This should be addressed. It should be a defined type or just done directly in nginx::resource::upstream.