Add tests from develop

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

maxscale-system-test/get_my_ip.h

@@ -0,0 +1,13 @@
+#ifndef GET_MY_IP_H
+#define GET_MY_IP_H
+
+/**
+ * @brief get_my_ip Get IP address of machine where this code is executed as it is visible from remote machine
+ * Connects to DNS port 53 of remote machine and gets own IP from socket info
+ * @param remote_ip IP of remote machine
+ * @param my_ip Pointer to result (own IP string)
+ * @return 0 in case of success
+ */
+int get_my_ip(char * remote_ip, char *my_ip );
+
+#endif // GET_MY_IP_H