MXS-2900 Rename maxscale-system-test directory to system-test

A link with the old directory name is provided.

system-test/bug676.cpp

@@ -0,0 +1,44 @@
+/**
+ * @file bug676.cpp  reproducing attempt for bug676
+ * - connect to RWSplit
+ * - stop node0
+ * - sleep 20 seconds
+ * - reconnect
+ * - check if 'USE test' is ok
+ * - check MaxScale is alive
+ */
+
+#include <iostream>
+#include "testconnections.h"
+#include "mariadb_func.h"
+
+int main(int argc, char* argv[])
+{
+    TestConnections::require_galera(true);
+    TestConnections test(argc, argv);
+
+    test.set_timeout(30);
+
+    test.maxscales->connect_maxscale(0);
+    test.tprintf("Stopping node 0");
+    test.galera->block_node(0);
+    test.maxscales->close_maxscale_connections(0);
+
+    test.stop_timeout();
+
+    test.tprintf("Waiting until the monitor picks a new master");
+    test.maxscales->wait_for_monitor();
+
+    test.set_timeout(30);
+
+    test.maxscales->connect_maxscale(0);
+    test.try_query(test.maxscales->conn_rwsplit[0], "USE test");
+    test.try_query(test.maxscales->conn_rwsplit[0], "show processlist;");
+    test.maxscales->close_maxscale_connections(0);
+
+    test.stop_timeout();
+
+    test.galera->unblock_node(0);
+
+    return test.global_result;
+}