feat(itim): Service config rendered as part of cluster config

ref: #247 #125 closes #69

app/itim/models/clusters.py

@@ -144,6 +144,8 @@ class Cluster(TenancyObject):
     @property
     def rendered_config(self):
 
+        from itim.models.services import Service
+
         rendered_config: dict = {}
 
         if self.cluster_type.config:
@@ -152,6 +154,14 @@ class Cluster(TenancyObject):
                 self.cluster_type.config
             )
 
+
+        for service in Service.objects.filter(cluster = self.pk):
+
+            if service.config_variables:
+
+                rendered_config.update( service.config_variables )
+
+
         if self.config:
 
             rendered_config.update(