Bootstrapping CFEngine agent to a regional (AWS) hub

Hat tip to my DevOps buddy Joaquin Menchaca for this one-liner to find out what AWS region your VM is in:

AWS_REGION=$(curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone | sed -e 's/[a-z]$//')

I am going to use it to bootstrap my Kubernetes VMs to the right CFEngine hub for their AWS region (i.e., to the local hub).

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