[RFE] Branch out config for quads-web and GPU filtering

[sadsfae]

Related-to: #460

We need to start branching out a /opt/quads/conf/quadsweb.yml to control more modular features of the quads-web service.

This is a good time to do it as with ttps://github.com//issues/460 we are adding GPU metadata support and we should have the ability to turn on/off filtering, for example in some labs or environments which will never have GPU and thus never have that field populated.

enable_gpu_inventory: true/false (default is false)

As we progress we can leverage this file to house more quads-web specific settings.

We'll want to package this file with the standard %config(noreplace) we use elsewhere:

[sadsfae]

WIP patchset: https://review.gerrithub.io/c/redhat-performance/quads/+/1208987