Goal: 

Brownfield deployments still have older Glance images without python3-mod_wsgi package.
This will break minor updates in a scenario where:
1. you update the operators from fr2 to fr3
2. the new glance-operator supports the wsgi deployment model only
3. Glance starts failing because there's still an old image without wsgi bits

The goal of this story is to add a compatibility layer, in the glance-operator, to allow newer images to deploy httpd+ProxyPass, so we can gracefully handle the transition to the new deployment model.