MXS-2243_labels Maxscale system tests prepare environment by themselves

maxscale-system-test changed in order to control test environment by itself.
Every test checks which machines are running, compare with list of needed machines
and start new VMs is they are missing in the running machines list.
Tests are executiong MDBCI commands, MDBCI executable should be in the PATH

maxscale-system-test/fw_copy_rules.h

@@ -1,5 +1,4 @@
-#ifndef FW_COPY_RULES_H
-#define FW_COPY_RULES_H
+#pragma once
 
 #include "testconnections.h"
 
@@ -10,5 +9,3 @@
  * @param rules_dir Directory where file is located
  */
 void copy_rules(TestConnections* Test, const char* rules_name, const char* rules_dir);
-
-#endif // FW_COPY_RULES_H