copycds enhancement: mkdir for the symlink under /install if not exist

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@13036 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/lib/xcat/plugins/anaconda.pm

@@ -1443,6 +1443,7 @@ sub copycd
 
     unless($path =~ /^($defaultpath)/)
     {
+	mkpath($defaultpath); 
         if(-d $defaultpath)
         {
                 rmtree($defaultpath);