Remove post instatiation actions from all node types

Supporting as simple option for deploying a cluster of nodes that only deploys the defined image with no-post provisioning steps.

Removes the user_data actions from the compute and gateway (ood) nodes. Removes provisioner actions from the master node (ohpc).

nodes/main.tf

@@ -27,10 +27,7 @@ resource "openstack_compute_instance_v2" "compute" {
   user_data =  <<-EOF
     #cloud-config
     runcmd:
-     - [ bash, -xc, 'ethernet=$(cat /sys/class/net/eth0/address); nodename=$(hostname -s); sed -e "s/MY_HWADDR/$ethernet/" -e "s/MY_NODENAME/$nodename/" -i /warewulf/config;' ]
-     - [ bash, -xc, "echo $(date) ': hello world!'; until WWGETFILES_INTERVAL=0 bash -x /warewulf/bin/wwgetfiles; do echo waiting ; rm -f /tmp/.wwgetfile.lock ; sleep 10; done;" ]
-     - [ bash, -xc, "systemctl restart munge" ]
-     - [ bash, -xc, "systemctl restart slurmd" ]
+     - [ bash, -xc, 'echo DEBUG: empty user_data var: add post instantiation steps here' ]
     EOF
 
 # defines the networks of the instance