[flux] allnode example nfs mount variables are different

[vsoch]

hey @wardharold ! Just a heads up for this example:

scientific-computing-examples/fluxfw-gcp/tf/examples/allinone/main.tf

Lines 28 to 31 in 2c96ce1

	cluster_storage = {
	mountpoint = "/home"
	share = "${module.nfs_server_instance.instances_details.0.network_interface.0.network_ip}:/var/nfs/home"
	}

This is what I've found to work:

# This enables NFS
nfsmounts=$(curl "http://metadata.google.internal/computeMetadata/v1/instance/attributes/nfs-mounts" -H "Metadata-Flavor: Google")

if [[ "X${nfsmounts}" != "X" ]]; then
    share=$(echo $nfsmounts | jq -r '.share')
    mountpoint=$(echo $nfsmounts | jq -r '.mountpoint')

    bash -c "sudo echo ${share} ${mountpoint} nfs defaults,hard,intr,_netdev 0 0 >> /etc/fstab"
    mount -a
fi

No need to edit / fix anything here promptly - I'm working off a totally different set of modules (one base image and one boot script) and I just noticed this tiny detail. This is mostly an FYI if someone tries this allinone example in the future!