title: Transfer source files from local machine to Jenkins slave
body: <p>apologies for the dumb question, I'm totally new to Jenkins and trying to hack together a POC.  I'm basically getting a postman collection, run via Newman to hopefully execute on Jenkins.  The Jenkins setup already exists, I can create a configuration and have it installing Newman but I'm sure my permissions will be limited.</p>
  
  <p>Unfortunately the Postman collection I want to work with is NOT in source control, we do not have sufficient access rights to put this where it should be, therefore I want to copy this collection, which is just a bunch of JSON files to the slave, Newman could then target these and run them.  </p>
  
  <p>Could anyone guide me on how to do this?  I've viewed a lot of existing questions around plugins but I'm afraid I cannot install new ones and I'm not even sure what exists on our Jenkins setup.  Any solutions without the need for this would be ideal.  I have ticked the 'Send files or execute commands over SSH before the build starts' checkbox but seems this is only for working with the workspace, I need to get the files there first somehow</p>