Fix flaky test 1827 (#1847)

Author: ericvergnaud

tests/integration/test_installation.py

@@ -20,6 +20,7 @@
     AlreadyExists,
     InvalidParameterValue,
     NotFound,
+    ResourceConflict,
 )
 
 from databricks.sdk.retries import retried
@@ -90,6 +91,7 @@ def factory(
         pending.remove()
 
 
+@retried(on=[NotFound, ResourceConflict], timeout=timedelta(minutes=2))
 def test_experimental_permissions_migration_for_group_with_same_name(
     installation_ctx,
     make_cluster_policy,