reservre meomory for tempalte struct

overlays/wwinit/etc/issue.ww

@@ -1,7 +1,7 @@
 Warewulf Node:      {{.Id}}
 Container:          {{.Container}}
-Kernel:             {{.KernelVersion}}
-Kernelargs:         {{.KernelArgs}}
+Kernel:             {{.Kernel.Version}}
+Kernelargs:         {{.Kernel.Args}}
 
 Network:
 {{- range $devname, $netdev := .NetDevs}}

overlays/wwinit/warewulf/config.ww

@@ -2,9 +2,9 @@ WWCONTAINER={{$.Container}}
 WWHOSTNAME={{$.Id}}
 WWROOT={{$.Root}}
 WWINIT={{$.Init}}
-WWIPMI_IPADDR="{{$.IpmiIpaddr}}"
-WWIPMI_NETMASK="{{$.IpmiNetmask}}"
-WWIPMI_GATEWAY="{{$.IpmiGateway}}"
-WWIPMI_USER="{{$.IpmiUserName}}"
-WWIPMI_PASSWORD="{{$.IpmiPassword}}"
-WWIPMI_WRITE="{{$.IpmiWrite}}"
+WWIPMI_IPADDR="{{$.Ipmi.Ipaddr}}"
+WWIPMI_NETMASK="{{$.Ipmi.Netmask}}"
+WWIPMI_GATEWAY="{{$.Ipmi.Gateway}}"
+WWIPMI_USER="{{$.Ipmi.UserName}}"
+WWIPMI_PASSWORD="{{$.Ipmi.Password}}"
+WWIPMI_WRITE="{{$.Ipmi.Write}}"