python3: small fixes for .items() usage

rhodecode/model/validation_schema/schemas/integration_schema.py

@@ -43,24 +43,24 b' def integration_scope_choices(permission'
     repo_choices = [
         ('repo:%s' % repo_name, '/' + repo_name)
         for repo_name, repo_perm
-        in permissions['repositories'].items()
+        in list(permissions['repositories'].items())
         if repo_perm == 'repository.admin'
     ]
     repogroup_choices = [
         ('repogroup:%s' % repo_group_name, '/' + repo_group_name + '/ (child repos only)')
         for repo_group_name, repo_group_perm
-        in permissions['repositories_groups'].items()
+        in list(permissions['repositories_groups'].items())
         if repo_group_perm == 'group.admin'
     ]
     repogroup_recursive_choices = [
         ('repogroup-recursive:%s' % repo_group_name, '/' + repo_group_name + '/ (recursive)')
         for repo_group_name, repo_group_perm
-        in permissions['repositories_groups'].items()
+        in list(permissions['repositories_groups'].items())
         if repo_group_perm == 'group.admin'
     ]
     result.extend(
         sorted(repogroup_recursive_choices + repogroup_choices + repo_choices,
-            key=lambda (choice, label): choice.split(':', 1)[1]
+            key=lambda choice_label: choice_label[0].split(':', 1)[1]
         )
     )
     return result