Add tests from develop

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

maxscale-system-test/ses_bigmem.cpp

@@ -0,0 +1,53 @@
+/**
+ * @file ses_bigmem Executes a lot of session commands with "disable_sescmd_history=true" and check that memory consumption is not increasing
+ * (relates to MXS-672 "maxscale possible memory leak"
+ */
+
+
+#include <iostream>
+#include <unistd.h>
+#include "testconnections.h"
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    TestConnections * Test = new TestConnections(argc, argv);
+    unsigned long maxscale_mem;
+
+    Test->set_timeout(10);
+
+    Test->connect_maxscale();
+    int iterations = Test->smoke ? 100000 : 1000000;
+    int r = Test->smoke ? 1 : 3;
+
+    for (int j = 0; j < r; j++)
+    {
+        for (int i = 0; i < iterations; i++)
+        {
+            Test->set_timeout(10);
+            Test->try_query(Test->routers[j], (char*) "set autocommit=0;");
+            Test->try_query(Test->routers[j], (char*) "select 1;");
+            Test->try_query(Test->routers[j], (char*) "set autocommit=1;");
+            Test->try_query(Test->routers[j], (char*) "select 2;");
+            if ((i / 100) * 100 == i)
+            {
+                Test->tprintf("i=%d\n", i);
+            }
+        }
+
+        maxscale_mem = Test->get_maxscale_memsize();
+        Test->tprintf("Maxscale process uses %lu KBytes\n", maxscale_mem);
+
+        if (maxscale_mem > 2000000)
+        {
+            Test->add_result(1, "Maxscale consumes too much memory\n");
+        }
+    }
+
+    Test->check_maxscale_alive();
+    int rval = Test->global_result;
+    delete Test;
+    return rval;
+}
+