commands/create: Remove global section of generated agenda
commands/create: Remove global section of generated agenda

Move the iterations parameter into `config`so the `global` section
can be removed.

ARM-software/workload-automation,lisatn/workload-automation,setrofim/workload-automation,setrofim/workload-automation,lisatn/workload-automation,setrofim/workload-automation,lisatn/workload-automation,setrofim/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,ARM-software/workload-automation,ARM-software/workload-automation