(TestCase) process_class can reference multiple remote_scheduler

Pre Test

1. Setup a JobScheduler / Agent configuration for v1.8.x
2. Put configuration of js1188.zip (see attachment) into the live folder
3. Change the adresses of remote_scheduler in my-agents.process_class.xml to adress the installed agent (the first process_class is to adress the master itself).
4. Start both JobScheduler (Master & Agent)

Test

1. start the job js-1188
2. check task log to be sure that the task was executed at the master
3. start the job js-1188 again
4. check task log to be sure that the task was executed at the agent
5. start the job js-1188 again
6. check task log to be sure that the task was executed at the master
7. shut down the agent
8. start the job js-1188 again
9. check task log to be sure that the task was executed at the master
10. check that task log contains a message like this:

    SCHEDULER-488  This remote JobScheduler ... is not accessible.