(Re-)connect c8b parameters in benchmark*.yaml

[falko]

The spreadsheet has columns for these four parameters but they are currently hard-coded/commented out:

zeebe-tuner/src/main/resources/benchmarktemplates/benchmark.yaml

Lines 27 to 28 in 72334a1

	-Dzeebe.client.request-timeout=600s
	-Dzeebe.client.job.poll-interval=1ms

zeebe-tuner/src/main/resources/benchmarktemplates/benchmark.yaml

Lines 42 to 43 in 72334a1

	# -Dzeebe.client.worker.max-jobs-active=${jobWorker.maxJobsActive}
	# -Dzeebe.client.worker.threads=${jobWorker.numberOfThreads}