cloud9 download cmds don't work outside workshop studio

[evdevr]

https://github.com/aws-samples/rancher-on-aws-workshop/blob/main/content/30-creating-a-cluster/31-creating-eks-cluster/index.en.md

we will need to replace with curls from github, or include instructions to take the files we told the user to download back in the workshop setup and upload them to cloud9 (easy drag and drop)

also need to chmod the setup script after upload to allow for execution

[zackbradys]

this is the one you're are currently working? @marshkkm

[marshkkm]

@zackbradys just committed changes to main to satisfy this one.