Read `resource_configuration` from non-VM Deployments

[marratj]

When we create deployment from a blueprint that contains vCenter VMs (resourceType == sdk.InfrastructureVirtual) then the provider reads the content[].data{} back from the deployment and puts it into resource_configuration blocks in the state file.

We still like to read back resource_configuration details also for XaaS software components, but for any non-VM deployments, this is not yet implemented.

There also seems to be a difference in how the vRA API responds when reading a Deployment. When VMs are part of the blueprint, they seem to be direct children of the deployment. They are directly listed within content[] of the resourceViews response together with the deployment itself. However, when there are XaaS components in the blueprint, they are not listed within content[] of the resourceViews response, only the deployment itself.

The non-VM components still can be retrieved via the GET: Child Resources link from the response, so the TF provider would be needed to be expanded with this.