Draft for Proxmox support

This makes use of coreos/afterburn#1023
to set up any static networking from the initrd (for Ignition) and the
hostname (early enough so that Ignition could overwrite it).

Author: pothos

dracut/30ignition/flatcar-metadata-hostname.service

@@ -33,6 +33,7 @@ ConditionKernelCommandLine=|flatcar.oem.id=vultr
 # Addition:
 ConditionKernelCommandLine=|coreos.oem.id=packet
 ConditionKernelCommandLine=|flatcar.oem.id=packet
+ConditionKernelCommandLine=|flatcar.oem.id=proxmoxve
 
 OnFailure=emergency.target
 OnFailureJobMode=isolate

dracut/30ignition/ignition-generator

@@ -146,6 +146,6 @@ if [ "${nopxe}" = 1 ]; then
     add_requires "disk-uuid.service" initrd.target
 fi
 
-if [[ $(cmdline_arg flatcar.oem.id) == "digitalocean" ]] || [[ $(cmdline_arg coreos.oem.id) == "digitalocean" ]]; then
+if [[ $(cmdline_arg flatcar.oem.id) == "digitalocean" ]] || [[ $(cmdline_arg coreos.oem.id) == "digitalocean" ]] || [[ $(cmdline_arg flatcar.oem.id) == "proxmoxve" ]]; then
     add_requires flatcar-digitalocean-network.service initrd.target
 fi