[policy] use "name" in result of lookup_name for CGs

fixes: #2915

hub/kojihub.py

@@ -9362,7 +9362,7 @@ def policy_get_cgs(data):
     # pull cg info out
     # note that br_id will be None if a component had no buildroot
     if 'cg_list' in data:
-        cgs = [lookup_name('content_generator', cg, strict=True)
+        cgs = [lookup_name('content_generator', cg, strict=True)['name']
                for cg in data['cg_list']]
         return set(cgs)
     # otherwise try buildroot data

tests/test_hub/test_policy_tests.py

@@ -136,11 +136,12 @@ class TestPolicyGetCGs(unittest.TestCase):
                 'build': 'whatever',
                 'buildroots': [],
                 }
+
         def my_lookup_name(table, info, strict=False, create=False):
             self.assertEqual(strict, True)
             self.assertEqual(create, False)
             self.assertEqual(table, 'content_generator')
-            return "cg %i" % info
+            return {'id': info, 'name': "cg %i" % info}
         self.lookup_name.side_effect = my_lookup_name
 
         result = kojihub.policy_get_cgs(data)