Currently, openshift_hosted role duplicates some logic
across separate task chains.  This commit cleans up
the openshift_hosted role and converts it to be
primarily used with include_role to give better
logic to the playbooks that utilize this role.

This commit also refactors the playbook that calls
various openshift_hosted roles into individual playbooks.
This allows more granularity for advanced users.

Automatic merge from submit-queue

hot fix for env variable resolve

If we use environment variables in our inventory files (and from what I seen we do this everywhere where We deploy OCP) our fact engine ignores env variables so if my path looks like
```
openshift_hosted_registry_routecertificates={"certfile": "{{inventory_dir}}/../files/certs/wildcard.registry.company.local.crt", "keyfile": "{{inventory_dir}}/../files/certs/wildcard.registry.companylocal.key", "cafile":"{{inventory_dir}}/../files/certs/CompanyLocalRootCA.crt"} 
openshift_hosted_registry_routehost=containers.registry.comany.local
```
the result is: `/../files/certs/RoSLocalRootCA.crt`

We need to fix our fact set in a long run to read Ansible variables. And it was done in the same way with router certificates already.

This workaround prevents the warnings on using Jinja2 templating
delimiters in `when:` conditions in cases where a variable is used as
the conditional.  This has been fixed in Ansible 2.4.
https://github.com/ansible/ansible/pull/25092

Merged by openshift-bot

Add missing hostnames to registry cert

AWS Provisioning with scale groups.

Allow GCS object storage to be configured