def ssm_run_shellscript(*cmd)
      Aws::Ssm.run(
        document_name: 'AWS-RunShellScript',
        targets: [{key: 'tag:aws:cloudformation:stack-name', values: [stack_name]}],
        parameters: {commands: cmd}
      )&.command_id.tap(&method(:puts))
    end
def ssm_run_shellscript(*cmd)
      Aws::Ssm.run(
        document_name: 'AWS-RunShellScript',
        targets: [{key: 'tag:aws:cloudformation:stack-name', values: [stack_name]}],
        parameters: {commands: cmd}
      )&.command_id.tap(&method(:puts))
    end
run a command on stack instances