Reintroduce test_idp to gating tests

test_idp should complete in ~27 minutes.

Related: https://pagure.io/freeipa/issue/9734

Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipatests/prci_definitions/gating.yaml

@@ -11,6 +11,10 @@ topologies:
     name: master_1repl_1client
     cpu: 4
     memory: 8000
+  master_2repl_1client: &master_2repl_1client
+    name: master_2repl_1client
+    cpu: 5
+    memory: 10750
   ad_master_2client: &ad_master_2client
     name: ad_master_2client
     cpu: 4
@@ -334,3 +338,15 @@ jobs:
         template: *ci-master-latest
         timeout: 600
         topology: *master_1repl
+
+  fedora-latest/test_external_idp:
+    requires: [fedora-latest/build]
+    priority: 100
+    job:
+      class: RunPytest
+      args:
+        build_url: '{fedora-latest/build_url}'
+        test_suite: test_integration/test_idp.py
+        template: *ci-master-latest
+        timeout: 3600
+        topology: *master_2repl_1client