STACKITRCO-186 - Add flag: iaas API param agent#1213

aeter wants to merge 2 commits intostackitcloud:mainstackitcloud/stackit-cli:mainfrom

aeter:feature/STACKITRCO-186-add-agent-api-paramaeter/stackit-cli:feature/STACKITRCO-186-add-agent-api-paramCopy head branch name to clipboard