test: fix rpmem_addr_ext test

It cannot work on nondebug builds, because it matches logs, which are
generated only in debug builds.

src/test/rpmem_addr_ext/TEST0

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2017-2018, Intel Corporation
+# Copyright 2017-2020, Intel Corporation
 
 #
 # src/test/rpmem_addr_ext/TEST0 -- advanced unittest for invalid target formats
@@ -10,6 +10,9 @@
 
 require_test_type short
 
+# matching logs works only with the debug version
+require_build_type debug
+
 require_nodes 2
 
 # libfabric version < 1.4.3 does not handle this test properly