Merge branch '2.3' into 2.4

system-test/mxs1662_pam_admin.cpp

@@ -0,0 +1,15 @@
+/**
+ * MXS-1662: PAM authenticator for admin users
+ */
+
+#include <maxtest/testconnections.hh>
+
+int main(int argc, char** argv)
+{
+    TestConnections test(argc, argv);
+
+    // TODO: Store login information
+    test.check_maxctrl("-u vagrant -p vagrant show maxscale");
+
+    return test.global_result;
+}