Implemented status check after 'stop' command.

Script will try to determine, if the startup was successfull, or not. It also exits with appropriate exit code.

bin/mentat-controller.py

@@ -511,6 +511,15 @@ class MentatControllerScript(pyzenkit.zenscript.ZenScript):
             else:
                 self.logger.info("Module '{}': Module is in weird state, unable to perform automatic shutdown".format(cname))
 
+        self.logger.info("Waiting for modules to fully shut down")
+        time.sleep(1)
+        status = self._modules_status()
+        if status['result'][0] == STATUS_NOT_RUNNING:
+            self.logger.info("System shutdown seems successfull")
+        else:
+            self.logger.info("System shutdown seems to have failed")
+
+        self.rc = status['result'][0]
         return self.RESULT_SUCCESS
 
     def cbk_command_signal_kill(self):