Add tests from develop

Added tests from develop. The test results need to be modified for 2.0.

maxscale-system-test/big_transaction.h

@@ -0,0 +1,17 @@
+#ifndef BIG_TRANSACTION_H
+#define BIG_TRANSACTION_H
+
+#include <mariadb/mysql.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "sql_t1.h"
+
+/**
+ * @brief big_transaction Executes big transaction (includes N INSERTs of 10000 rows)
+ * @param conn MYSQL connection handler
+ * @param N Number of INSERTs
+ * @return 0 if success
+ */
+int big_transaction(MYSQL * conn, int N);
+
+#endif // BIG_TRANSACTION_H