Fix missing compute entries in uni05epsilon roles_groups_map

The DCN adoption support commit in ci-framework (78bf394d) changed the
tripleo-ansible-inventory.yaml.j2 template to iterate over
_stack.stack_nodes instead of roles_groups_map.items(). This requires
all stack_nodes groups to have a corresponding entry in roles_groups_map.

The uni05epsilon scenario defines cell1-osp-computes and
cell2-osp-computes in stack_nodes but was missing them from
roles_groups_map, causing an AnsibleUndefinedVariable error during
the "Create tripleo ansible inventory" task for cell stacks.

Signed-off-by: Roberto Alfieri <ralfieri@redhat.com>

Author: rebtoor

scenarios/uni05epsilon.yaml

@@ -38,7 +38,9 @@ hostname_groups_map:
 roles_groups_map:
   # map ansible groups to tripleo Role names
   osp-controllers: Controller
+  cell1-osp-computes: Compute
   cell1-osp-controllers: CellController
+  cell2-osp-computes: Compute
   cell2-osp-controllers: CellController
 # A new name for 'default' cell of OSP after adopting it into RHOSO
 default_cell_name: cell1