Description of problem:

The deployment roles CFME 4.2 beta1 and RHOS10 are missing, the nodes Relationships show clusters, since version 10 introduced composible roles that could be a reason why the deployment roles could not be obtained from undercloud 

Version-Release number of selected component (if applicable):
5.7.0.9 beta 1

How reproducible:
100$

Steps to Reproduce:
1. deploy RHOS10 and connect the infra provider details
2. go to compute --> infra... --> nodes
3. select one of the nodes.
4. in relationships the deployment roles are missing

Actual results:

Deployment roles are missing, the toplogy map does not contains the nodes icons

Expected results:
show deployment roles in node details, show toplogy

Additional info: