Add missing dependencies for spiceproxy in values

without the dependencies in the values.yaml, the role and rolebinding will
not be created by helm-toolkit as it uses those to create and generate the
role/rolebinding for the accounts

Change-Id: I711d5fc4a2a376a29daf526fc420790ea9cacf25

nova/values.yaml

@@ -393,6 +393,12 @@ dependencies:
       services:
         - endpoint: internal
           service: oslo_db
+    spiceproxy:
+      jobs:
+        - nova-db-sync
+      services:
+        - endpoint: internal
+          service: oslo_db
     scheduler:
       jobs:
         - nova-db-sync