The add_order command send using the security_server should provide params

Current situation
When using the security server to add an order to JobScheduler it is not possible to add params. The parameters are ignored.

Desired behaviour
When specifying parameters in the add_order command, the parameters should be used.

Example:

After login with
http://localhost:43000/jobscheduler/engine/plugin/security/login?user=root&password=root

and sending the add_order

http://localhost:43000/jobscheduler/engine/plugin/security/add_order?session_id=f15dadf4-6c13-4eac-bf1a-bd2092961a62&job_chain=/job_chain1&params=name1=wert1|test=wert2|name3=wert3

the jobs in the job_chain job_chain1 should can acces the parameters name1, test and name3.