DAOS-16268 test: daos_test/rebuild.py tests not reporting failed pool creation

src/tests/suite/daos_rebuild_common.c

@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2023 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -1210,7 +1210,7 @@ rebuild_sub_setup_common(void **state, daos_size_t pool_size, int node_nr, uint3
 		 */
 		print_message("It can not create the pool, probably due"
 			      " to not enough ranks %d\n", rc);
-		return 0;
+		return rc;
 	}
 
 	arg = *state;

src/tests/suite/daos_rebuild_ec.c

@@ -271,7 +271,7 @@ rebuild_ec_setup(void  **state, int number, uint32_t rf)
 		print_message("It can not create the pool with %d ranks"
 			      " probably due to not enough ranks %d\n",
 			      number, rc);
-		return 0;
+		return rc;
 	}
 
 	arg = *state;

src/tests/suite/daos_rebuild_simple.c

@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2023 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -932,7 +932,7 @@ rebuild_small_pool_n4_setup(void **state)
 		 */
 		print_message("It can not create the pool with 4 ranks"
 			      " probably due to not enough ranks %d\n", rc);
-		return 0;
+		return rc;
 	}
 
 	arg = *state;