Merge branch 'run_tests_serialized' into 'master'

do not run tests in parallel by default

See merge request i4/manycore/emper!27

tests/meson.build

@@ -12,6 +12,7 @@ tests = {
 		  {
 			'description': 'Simplest fib test',
 			'test_suite': 'smoke',
+			'is_parallel': true,
 		  },
 
 		  'c_api_test.c':
@@ -76,7 +77,7 @@ foreach source, test_dict : tests
 
   test(test_name,
 	   test_exe,
-	   is_parallel: test_dict.get('is_parallel', true),
+	   is_parallel: test_dict.get('is_parallel', false),
 	   suite: test_dict.get('test_suite', 'all'),
 	   timeout: 60,
 	   env: test_env,