[3669] Distcheck fix in util

src/lib/util/tests/Makefile.am

@@ -17,11 +17,11 @@ CLEANFILES = *.gcno *.gcda
 # CSV files are created by unit tests for CSVFile class.
 CLEANFILES += *.csv
 
+EXTRA_DIST = process_spawn_app.sh
+
 TESTS_ENVIRONMENT = \
         $(LIBTOOL) --mode=execute $(VALGRIND_COMMAND)
 
-noinst_SCRIPTS = process_spawn_app.sh
-
 TESTS =
 if HAVE_GTEST
 TESTS += run_unittests