-Skip abbreviating single nodes to one-sized groups

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@3254 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/NodeRange.pm

@@ -264,6 +264,8 @@ sub abbreviate_noderange {
     }
 
     foreach $group (keys %grouphash) {
+        #skip single node sized groups, these outliers frequently pasted into non-noderange capable contexts
+        if (scalar @{$grouphash{$group}} < 2) { next; }
         push @{$sizedgroups{scalar @{$grouphash{$group}}}},$group;
     }
     my $node;