set the primary network in NodeInfo not in NetDev

Prior the primary was a boolean attribute of NetDev, so several
NetDevs could have been primay. Setting is as a sting in NodeConf
assures that only one network could be primary.
If no primary network is set, a valid altvalue will be set.

internal/pkg/node/constructors.go

@@ -134,13 +134,6 @@ func (config *NodeYaml) FindAllNodes() ([]NodeInfo, error) {
 		for _, netdev := range n.NetDevs {
 			netdev.SetDefFrom(defConfNet)
 		}
-		// set default/primary network is just one network exist
-		if len(n.NetDevs) == 1 {
-			// only way to get the key
-			for key := range node.NetDevs {
-				n.NetDevs[key].Primary.SetDefaultB(true)
-			}
-		}
 		// backward compatibility
 		n.Ipmi.Ipaddr.Set(node.IpmiIpaddr)
 		n.Ipmi.Netmask.Set(node.IpmiNetmask)
@@ -178,6 +171,20 @@ func (config *NodeYaml) FindAllNodes() ([]NodeInfo, error) {
 			wwlog.Verbose("Merging profile into node: %s <- %s", nodename, profileName)
 			n.SetAltFrom(config.NodeProfiles[profileName], profileName)
 		}
+		// set default/primary network is just one network exist
+		if len(n.NetDevs) >= 1 {
+			tmpNets := make([]string, 0, len(n.NetDevs))
+			for key := range node.NetDevs {
+				tmpNets = append(tmpNets, key)
+			}
+			sort.Strings(tmpNets)
+			// if a value is present in profile or node, default is not visible
+			wwlog.Debug("%s setting primary network device: %s", n.Id.Get(), tmpNets[0])
+			n.PrimaryNetDev.SetDefault(tmpNets[0])
+		}
+		if dev, ok := n.NetDevs[n.PrimaryNetDev.Get()]; ok {
+			dev.Primary.SetDefaultB(true)
+		}
 		ret = append(ret, n)
 	}