Revert "TMP REVERT ME take out hanging parallel test"

This reverts commit 07fb558.

Author: franzpoeschel

test/Files_ParallelIO/iterate_nonstreaming_series.cpp

@@ -181,12 +181,11 @@ auto iterate_nonstreaming_series() -> void
 {
     for (auto const &backend : testedBackends())
     {
-        std::cout << "TESTING BACKEND " << backend.extension << std::endl;
-        // run_test(
-        //     "../samples/iterate_nonstreaming_series/parallel_filebased_%T." +
-        //         backend.extension,
-        //     false,
-        //     backend.jsonBaseConfig());
+        run_test(
+            "../samples/iterate_nonstreaming_series/parallel_filebased_%T." +
+                backend.extension,
+            false,
+            backend.jsonBaseConfig());
         run_test(
             "../samples/iterate_nonstreaming_series/parallel_groupbased." +
                 backend.extension,
@@ -195,14 +194,13 @@ auto iterate_nonstreaming_series() -> void
 #if openPMD_HAVE_ADIOS2 && openPMD_HAVE_ADIOS2_BP5
         if (backend.extension == "bp")
         {
-            // run_test(
-            //     "../samples/iterate_nonstreaming_series/"
-            //     "parallel_filebased_bp5_%T." +
-            //         backend.extension,
-            //     false,
-            //     json::merge(
-            //         backend.jsonBaseConfig(), "adios2.engine.type =
-            //         \"bp5\""));
+            run_test(
+                "../samples/iterate_nonstreaming_series/"
+                "parallel_filebased_bp5_%T." +
+                    backend.extension,
+                false,
+                json::merge(
+                    backend.jsonBaseConfig(), "adios2.engine.type = \"bp5\""));
             run_test(
                 "../samples/iterate_nonstreaming_series/"
                 "parallel_groupbased_bp5." +