Add tests from develop

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

maxscale-system-test/bad_pers.cpp

@@ -0,0 +1,27 @@
+/**
+ * @file bad_pres.cpp check that Maxscale prints warning if persistpoolmax=-1 for all backends (bug MXS-576)
+ *
+ * - Maxscale.cnf contains persistpoolmax=-1 for all servers
+ * - check log warning about it
+ */
+
+
+
+#include <iostream>
+#include <unistd.h>
+#include "testconnections.h"
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    TestConnections * Test = new TestConnections(argc, argv);
+    Test->set_timeout(10);
+    Test->connect_maxscale();
+    Test->check_log_err((char *) "warning -1", true);
+    Test->check_maxscale_alive();
+    int rval = Test->global_result;
+    delete Test;
+    return rval;
+}
+