Add tests from develop

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

maxscale-system-test/mxs621_unreadable_cnf.cpp

@@ -0,0 +1,32 @@
+/**
+ * @file max621_unreadable_cnf.cpp mxs621 regression case ("MaxScale fails to start silently if config file is not readable")
+ *
+ * - make maxscale.cnf unreadable
+ * - try to restart Maxscale
+ * - check log for error
+ * - retore access rights to maxscale.cnf
+ */
+
+
+#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(30);
+    Test->ssh_maxscale(true, "chmod 400 /etc/maxscale.cnf");
+    Test->set_timeout(30);
+    Test->restart_maxscale();
+    Test->set_timeout(30);
+    Test->check_log_err((char *) "Opening file '/etc/maxscale.cnf' for reading failed", true);
+    Test->set_timeout(30);
+    Test->ssh_maxscale(true, "chmod 777 /etc/maxscale.cnf");
+
+    int rval = Test->global_result;
+    delete Test;
+    return rval;
+}