Skip resque tests when barbican integration is enabled

Skip tests that are not ready for singed images.

Related-Prod: PRODX-32366
Change-Id: I700506681d8f900bde6bf25d063739b5ad685006
(cherry picked from commit 3078417e6c719d071d1da2342164427bdad2b25c)
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index 5445113..b64bb32 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -122,6 +122,9 @@
         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)
 
     def _create_server_and_rescue_image(self, hw_rescue_device=None,
                                         hw_rescue_bus=None,