fix defect #4539 [FVT] On RHEL 7.1 ppc64, the name of network adapters changed after the operating system

xCAT-server/share/xcat/install/rh/compute.rhel7.tmpl

@@ -151,4 +151,5 @@ reboot
 %end
 %post
 #INCLUDE:#ENV:XCATROOT#/share/xcat/install/scripts/post.xcat#
+#INCLUDE:#ENV:XCATROOT#/share/xcat/install/scripts/post.rhels7#
 %end

xCAT-server/share/xcat/install/scripts/post.rhels7

@@ -0,0 +1,9 @@
+#the nic name might change between the installation and 1st boot
+#active all the nics with network link during system boot
+for i in $(find /etc/sysconfig/network-scripts/ifcfg-*|egrep -v ifcfg-lo )
+do 
+  nicname=$(echo $i|awk -F 'ifcfg-' '{print $2}')
+  if ethtool $nicname|grep -E -i "Link detected.*yes" >/dev/null 2>&1
+     then sed -i 's/ONBOOT=no/ONBOOT=yes/' $i 
+  fi
+done