Cleaning up deps

even though the pythin being managed by apt, the
graph is more accurate with this dep.

placing the dep on the Nova::Manage::Admin define 
was creating an extra edge/vertice in the graph.

manifests/init.pp

@@ -31,8 +31,12 @@ class nova(
     notify +> Exec['post-nova_config']
   }
   # TODO - why is this required?
-  package { ['python', 'python-greenlet']:
-    ensure => present
+  package { 'python':
+    ensure => present,
+  }
+  package { 'python-greenlet':
+    ensure => present,
+    require => Package['python'],
   }
 
   class { 'nova::utilities': }

manifests/manage/admin.pp

@@ -1,6 +1,6 @@
 define nova::manage::admin {
 
-  File['/etc/nova/nova.conf'] -> Nova::Manage::Admin[$name]
+  File['/etc/nova/nova.conf'] -> Nova_admin[$name]
   Exec<| title == 'initial-db-sync' |> -> Nova_admin[$name]
 
   nova_admin{ $name: