Attract node type permissions: from project & allow DELETE by default.

Instead of using default permissions (with only write access by admin
group), we now copy the project permissions. Then, for everyone who
has PUT access, DELETE on the node is also allowed.

pillar/manage.py

@@ -3,6 +3,7 @@
 from __future__ import print_function
 from __future__ import division
 
+import copy
 import os
 import logging
 
@@ -172,12 +173,22 @@ def setup_for_attract(project_uuid, replace=False):
     from manage_extra.node_types.scene import node_type_scene
     from manage_extra.node_types.shot import node_type_shot
 
-    default_permissions = _default_permissions()
-    node_type_act['permissions'] = default_permissions
-    node_type_scene['permissions'] = default_permissions
-    node_type_shot['permissions'] = default_permissions
-
+    # Copy permissions from the project, then give everyone with PUT
+    # access also DELETE access.
     project = _get_project(project_uuid)
+    permissions = copy.deepcopy(project['permissions'])
+
+    for perms in permissions.values():
+        for perm in perms:
+            methods = set(perm['methods'])
+            if 'PUT' not in perm['methods']:
+                continue
+            methods.add('DELETE')
+            perm['methods'] = list(methods)
+
+    node_type_act['permissions'] = permissions
+    node_type_scene['permissions'] = permissions
+    node_type_shot['permissions'] = permissions
 
     # Add the missing node types.
     for node_type in (node_type_act, node_type_scene, node_type_shot):