Skip test_created_server_uefi when barbican integration enabled

Skip because test creates image which should be signed.

Related-Prod: PRODX-29452
Change-Id: I2131347a993f4551bdfc66a4a717e746ee4c692f
diff --git a/tempest/api/compute/admin/test_create_server.py b/tempest/api/compute/admin/test_create_server.py
index 6239c66..5400a2b 100644
--- a/tempest/api/compute/admin/test_create_server.py
+++ b/tempest/api/compute/admin/test_create_server.py
@@ -150,6 +150,9 @@
         super(ServersTestUEFI, cls).setup_clients()
         cls.client = cls.servers_client
 
+    @testtools.skipIf(
+        CONF.compute_feature_enabled.barbican_integration_enabled,
+        "Not supported when barbican integration enabled.")
     @decorators.idempotent_id('94feb6c3-d07e-b3b9-def8-64fd082d9b21')
     def test_created_server_uefi(self):
         # create custom image with uefi type