ci: add facility to run sysbench WF in debug mode
The perf_sysbench.yml workflow has the 'workflow_dispatch' trigger that is often used to test some workflow changes. To not litter in the InfluxDB prod bucket, MyTeam chat and mailing list, the special option is added (Debug mode). When checking this option the InfluxDB test bucket, MyTeam chat, and mailing list will be used. NO_DOC=ci NO_TEST=ci NO_CHANGELOG=ci