Skip resque tests when barbican integration is enabled

Skip tests that are not ready for singed images.

Related-Prod: PRODX-27999
Change-Id: I700506681d8f900bde6bf25d063739b5ad685006
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index 697caaa..c31ac0b 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -126,6 +126,9 @@
         if not CONF.compute_feature_enabled.stable_rescue:
             msg = "Stable rescue not available."
             raise cls.skipException(msg)
+        if CONF.compute_feature_enabled.barbican_integration_enabled:
+            msg = "Rescue not supported with barbican integration."
+            raise cls.skipException(msg)
 
     @classmethod
     def setup_credentials(cls):