constant net naming scheme and NetworkManager rule

Apperently the rules in /etc/systemd/network are not
honored by NetworkManager which loads earlier than
systemd-networkd, so adding a rule for NetworkManager

internal/pkg/node/constructors.go

@@ -24,7 +24,7 @@ defaultnode:
   system overlay:
   - wwinit
   kernel:
-    args: quiet crashkernel=no vga=791
+    args: quiet crashkernel=no vga=791 net.naming-scheme=v238
   init: /sbin/init
   root: initramfs
   profiles:

overlays/wwinit/etc/udev/rules.d/70-ww4-netname.rules

@@ -0,0 +1,9 @@
+# This file is autogenerated by warewulf 
+# Host:   {{.BuildHost}}
+# Time:   {{.BuildTime}}
+# Source: {{.BuildSource}}
+{{range $devname, $netdev := .NetDevs}}
+{{- if $netdev.Hwaddr }}
+SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="{{ $netdev.Hwaddr }}", NAME="{{ $netdev.Device }}"
+{{ end -}}
+{{ end -}}