Skip resque tests when barbican integration is enabled

Skip tests that are not ready for singed images.

Related-Prod: PRODX-27999
Change-Id: I700506681d8f900bde6bf25d063739b5ad685006
(cherry picked from commit 4e6b5d483781f8cea0ee868ded280ebd434ea95f)
(cherry picked from commit 2804908d097ac5dcc5f84c0125b40e536e92c5f3)
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index d6c0324..b8a499c 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -123,6 +123,9 @@
         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):